diff --git a/src/support_x86.cpp b/src/support_x86.cpp
index 0ab9669..d5c17ba 100644
--- a/src/support_x86.cpp
+++ b/src/support_x86.cpp
@@ -58,8 +58,9 @@ static inline bool xgetbvCheck(unsigned int bits)
 #endif
 }
 
-Vc_TARGET_NO_SIMD
-bool isImplementationSupported(Implementation impl)
+
+Vc_TARGET_NO_SIMD 
+bool Vc_VDECL isImplementationSupported(Vc::Implementation impl)
 {
     CpuId::init();