diff --git a/sdk/lib/crt/mem/memchr.c b/sdk/lib/crt/mem/memchr.c
index 11682251567..ac2c68e1ba5 100644
--- a/sdk/lib/crt/mem/memchr.c
+++ b/sdk/lib/crt/mem/memchr.c
@@ -1,7 +1,7 @@
 
 #include <string.h>
 
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && (_MSC_VER >= 1910 || !defined(_WIN64))
 #pragma function(memchr)
 #endif /* _MSC_VER */
 
diff --git a/sdk/lib/crt/mem/memmove.c b/sdk/lib/crt/mem/memmove.c
index 6d0dd8bf4d2..34b71c091ca 100644
--- a/sdk/lib/crt/mem/memmove.c
+++ b/sdk/lib/crt/mem/memmove.c
@@ -1,6 +1,6 @@
 #include <string.h>
 
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && (_MSC_VER >= 1910 || !defined(_WIN64))
 #pragma function(memmove)
 #endif /* _MSC_VER */