diff --git a/src/app/@theme/styles/bootstrap-rtl.scss b/src/app/@theme/styles/bootstrap-rtl.scss
deleted file mode 100644
index 3d8bd7bf58..0000000000
--- a/src/app/@theme/styles/bootstrap-rtl.scss
+++ /dev/null
@@ -1,193 +0,0 @@
-@import './themes';
-
-@mixin bootstrap-rtl() {
-  .btn-group:not(.btn-divided-group) > .btn:not(.dropdown-toggle) {
-    &:first-child {
-      @include nb-ltr() {
-        border-top-left-radius: nb-theme(btn-border-radius);
-        border-bottom-left-radius: nb-theme(btn-border-radius);
-        border-top-right-radius: 0;
-        border-bottom-right-radius: 0;
-      };
-      @include nb-rtl() {
-        border-top-left-radius: 0;
-        border-bottom-left-radius: 0;
-        border-top-right-radius: nb-theme(btn-border-radius);
-        border-bottom-right-radius: nb-theme(btn-border-radius);
-      };
-    }
-    &:last-child {
-      @include nb-ltr() {
-        border-top-left-radius: 0;
-        border-bottom-left-radius: 0;
-        border-top-right-radius: nb-theme(btn-border-radius);
-        border-bottom-right-radius: nb-theme(btn-border-radius);
-      };
-      @include nb-rtl() {
-        border-top-left-radius: nb-theme(btn-border-radius);
-        border-bottom-left-radius: nb-theme(btn-border-radius);
-        border-top-right-radius: 0;
-        border-bottom-right-radius: 0;
-      };
-    }
-  }
-
-  .btn-group.dropdown {
-    & > .btn:first-of-type.dropdown-toggle {
-      @include nb-ltr() {
-        border-top-left-radius: nb-theme(btn-border-radius);
-        border-top-right-radius: 0;
-      };
-      @include nb-rtl() {
-        border-top-left-radius: 0;
-        border-top-right-radius: nb-theme(btn-border-radius);
-      };
-    }
-    & > .btn:last-of-type.dropdown-toggle {
-      @include nb-ltr() {
-        border-top-left-radius: 0;
-        border-top-right-radius: nb-theme(btn-border-radius);
-      };
-      @include nb-rtl() {
-        border-top-left-radius: nb-theme(btn-border-radius);
-        border-top-right-radius: 0;
-      };
-    }
-
-    &:not(.show) {
-      & > .btn:first-of-type.dropdown-toggle {
-        @include nb-ltr() {
-          border-bottom-left-radius: nb-theme(btn-border-radius);
-          border-bottom-right-radius: 0;
-        };
-        @include nb-rtl() {
-          border-bottom-left-radius: 0;
-          border-bottom-right-radius: nb-theme(btn-border-radius);
-        };
-      }
-      & > .btn:last-of-type.dropdown-toggle {
-        @include nb-ltr() {
-          border-bottom-left-radius: 0;
-          border-bottom-right-radius: nb-theme(btn-border-radius);
-        };
-        @include nb-rtl() {
-          border-bottom-left-radius: nb-theme(btn-border-radius);
-          border-bottom-right-radius: 0;
-        };
-      }
-    }
-  }
-
-  .btn-group.dropup {
-    & > .btn:first-of-type.dropdown-toggle {
-      @include nb-ltr() {
-        border-bottom-left-radius: nb-theme(btn-border-radius);
-        border-bottom-right-radius: 0;
-      };
-      @include nb-rtl() {
-        border-bottom-left-radius: 0;
-        border-bottom-right-radius: nb-theme(btn-border-radius);
-      };
-    }
-    & > .btn:last-of-type.dropdown-toggle {
-      @include nb-ltr() {
-        border-bottom-left-radius: 0;
-        border-bottom-right-radius: nb-theme(btn-border-radius);
-      };
-      @include nb-rtl() {
-        border-bottom-left-radius: nb-theme(btn-border-radius);
-        border-bottom-right-radius: 0;
-      };
-    }
-
-    &:not(.show) {
-      & > .btn:first-of-type.dropdown-toggle {
-        @include nb-ltr() {
-          border-top-left-radius: nb-theme(btn-border-radius);
-          border-top-right-radius: 0;
-        };
-        @include nb-rtl() {
-          border-top-left-radius: 0;
-          border-top-right-radius: nb-theme(btn-border-radius);
-        };
-      }
-      & > .btn:last-of-type.dropdown-toggle {
-        @include nb-ltr() {
-          border-top-left-radius: 0;
-          border-top-right-radius: nb-theme(btn-border-radius);
-        };
-        @include nb-rtl() {
-          border-top-left-radius: nb-theme(btn-border-radius);
-          border-top-right-radius: 0;
-        };
-      }
-    }
-  }
-
-  .btn-divided-group {
-    .btn:not(:first-child) {
-      @include nb-ltr(margin-left, 0.5rem);
-      @include nb-rtl(margin-right, 0.5rem);
-      border-radius: nb-theme(btn-border-radius);
-    }
-  }
-
-  .input-group-addon,
-  .input-group-icon {
-    @include nb-ltr() {
-      border-left: nb-theme(form-control-border);
-      border-right: none;
-    };
-    @include nb-rtl() {
-      border-left: none;
-      border-right: nb-theme(form-control-border);
-    };
-  }
-
-  .input-group {
-    .form-control:first-child:not(:only-child),
-    .input-group-addon:first-child,
-    .input-group-prepend .btn:first-child,
-    .input-group-btn .btn:first-child {
-      @include nb-ltr() {
-        border-top-left-radius: nb-theme(form-control-border-radius);
-        border-bottom-left-radius: nb-theme(form-control-border-radius);
-        border-top-right-radius: 0;
-        border-bottom-right-radius: 0;
-      };
-      @include nb-rtl() {
-        border-top-left-radius: 0;
-        border-bottom-left-radius: 0;
-        border-top-right-radius: nb-theme(form-control-border-radius);
-        border-bottom-right-radius: nb-theme(form-control-border-radius);
-      };
-    }
-    .form-control:last-child:not(:only-child),
-    .input-group-addon:last-child,
-    .input-group-append .btn:last-child,
-    .input-group-btn .btn:last-child {
-      @include nb-ltr() {
-        border-top-left-radius: 0;
-        border-bottom-left-radius: 0;
-        border-top-right-radius: nb-theme(form-control-border-radius);
-        border-bottom-right-radius: nb-theme(form-control-border-radius);
-      };
-      @include nb-rtl() {
-        border-top-left-radius: nb-theme(form-control-border-radius);
-        border-bottom-left-radius: nb-theme(form-control-border-radius);
-        border-top-right-radius: 0;
-        border-bottom-right-radius: 0;
-      };
-    }
-
-    .dropdown.show .btn.dropdown-toggle {
-      border-bottom-left-radius: 0;
-      border-bottom-right-radius: 0;
-    }
-
-    .dropup.show .btn.dropdown-toggle {
-      border-top-left-radius: 0;
-      border-top-right-radius: 0;
-    }
-  }
-}
diff --git a/src/app/@theme/styles/styles.scss b/src/app/@theme/styles/styles.scss
index aa28043c35..a8aa3271d1 100644
--- a/src/app/@theme/styles/styles.scss
+++ b/src/app/@theme/styles/styles.scss
@@ -11,8 +11,6 @@
 // loading progress bar theme
 @import './pace.theme';
 
-@import './bootstrap-rtl';
-
 // install the framework and custom global styles
 @include nb-install() {
 
@@ -22,10 +20,4 @@
 
   // loading progress bar
   @include ngx-pace-theme();
-
-  // fixed in rc.9 and can be removed after upgrade
-  .custom-control .custom-control-indicator {
-    border-radius: 50%; // TODO: quickfix for https://github.com/akveo/nebular/issues/275
-  }
-  @include bootstrap-rtl();
 };