diff --git a/projects/clr/hipamd/include/hcc_detail/hip_runtime.h b/projects/clr/hipamd/include/hcc_detail/hip_runtime.h
index 76ecb23787..07cb9cc73e 100644
--- a/projects/clr/hipamd/include/hcc_detail/hip_runtime.h
+++ b/projects/clr/hipamd/include/hcc_detail/hip_runtime.h
@@ -33,7 +33,7 @@ THE SOFTWARE.
 
 
 //#include <cstring>
-//#include <cmath>
+#include <cmath>
 #include <string.h>
 #include <stddef.h>