diff --git a/std/path.d b/std/path.d
index 88b817d4588..5f3fc389e36 100644
--- a/std/path.d
+++ b/std/path.d
@@ -1276,7 +1276,7 @@ auto withDefaultExtension(R, C)(auto ref R path, C[] ext)
     Returns: The assembled path.
 */
 immutable(ElementEncodingType!(ElementType!Range))[]
-    buildPath(Range)(Range segments)
+    buildPath(Range)(scope Range segments)
         if (isInputRange!Range && isSomeString!(ElementType!Range))
 {
     if (segments.empty) return null;
diff --git a/std/uni.d b/std/uni.d
index 563ebe3d5fd..34d9ab1a315 100644
--- a/std/uni.d
+++ b/std/uni.d
@@ -6657,13 +6657,13 @@ public:
         Warning: Invalidates when this Grapheme leaves the scope,
         attempts to use it then would lead to memory corruption.
     +/
-    @system SliceOverIndexed!Grapheme opSlice(size_t a, size_t b) pure nothrow @nogc
+    @system SliceOverIndexed!Grapheme opSlice(size_t a, size_t b) return pure nothrow @nogc
     {
         return sliceOverIndexed(a, b, &this);
     }
 
     /// ditto
-    @system SliceOverIndexed!Grapheme opSlice() pure nothrow @nogc
+    @system SliceOverIndexed!Grapheme opSlice() return pure nothrow @nogc
     {
         return sliceOverIndexed(0, length, &this);
     }