diff --git a/poetry/console/commands/install.py b/poetry/console/commands/install.py
index 40882394e22..0eca8a9be0c 100644
--- a/poetry/console/commands/install.py
+++ b/poetry/console/commands/install.py
@@ -107,13 +107,13 @@ def handle(self) -> int:
         only_groups = []
         if self.option("no-dev"):
             self.line(
-                "<warning>The `<fg=yellow;options=bold>--no-dev</>` option is deprecated,"
+                "<warning>The `<fg=yellow;options=bold>--no-dev</>` option is deprecated, "
                 "use the `<fg=yellow;options=bold>--without dev</>` notation instead.</warning>"
             )
             excluded_groups.append("dev")
         elif self.option("dev-only"):
             self.line(
-                "<warning>The `<fg=yellow;options=bold>--dev-only</>` option is deprecated,"
+                "<warning>The `<fg=yellow;options=bold>--dev-only</>` option is deprecated, "
                 "use the `<fg=yellow;options=bold>--only dev</>` notation instead.</warning>"
             )
             only_groups.append("dev")
@@ -146,7 +146,7 @@ def handle(self) -> int:
         with_synchronization = self.option("sync")
         if self.option("remove-untracked"):
             self.line(
-                "<warning>The `<fg=yellow;options=bold>--remove-untracked</>` option is deprecated,"
+                "<warning>The `<fg=yellow;options=bold>--remove-untracked</>` option is deprecated, "
                 "use the `<fg=yellow;options=bold>--sync</>` option instead.</warning>"
             )
 
diff --git a/poetry/console/commands/show.py b/poetry/console/commands/show.py
index 6fb2baa4b24..d4567bc162d 100644
--- a/poetry/console/commands/show.py
+++ b/poetry/console/commands/show.py
@@ -97,7 +97,7 @@ def handle(self) -> Optional[int]:
         only_groups = []
         if self.option("no-dev"):
             self.line(
-                "<warning>The `<fg=yellow;options=bold>--no-dev</>` option is deprecated,"
+                "<warning>The `<fg=yellow;options=bold>--no-dev</>` option is deprecated, "
                 "use the `<fg=yellow;options=bold>--without dev</>` notation instead.</warning>"
             )
             excluded_groups.append("dev")