diff --git a/libsrc/core/simd_avx.hpp b/libsrc/core/simd_avx.hpp
index ecb94239..61042982 100644
--- a/libsrc/core/simd_avx.hpp
+++ b/libsrc/core/simd_avx.hpp
@@ -229,7 +229,7 @@ namespace ngcore
   
   NETGEN_INLINE auto SwapPairs (SIMD<double,4> a)
   {
-    reutrn _mm256_shuffle_pd (a.Data(), a.Data(), 0b0101);
+    return _mm256_shuffle_pd (a.Data(), a.Data(), 0b0101);
   }
 
   
diff --git a/libsrc/core/simd_avx512.hpp b/libsrc/core/simd_avx512.hpp
index 38779606..cfddbe07 100644
--- a/libsrc/core/simd_avx512.hpp
+++ b/libsrc/core/simd_avx512.hpp
@@ -266,7 +266,7 @@ namespace ngcore
 
   NETGEN_INLINE auto SwapPairs (SIMD<double,8> a)
   {
-    reutrn _mm512_shuffle_pd (a.Data(), a.Data(), 0b01010101);
+    return _mm512_shuffle_pd (a.Data(), a.Data(), 0b01010101);
   }
   
 }