diff --git a/modules/openssl/SCsub b/modules/openssl/SCsub
index 19540172486..b86218bd084 100644
--- a/modules/openssl/SCsub
+++ b/modules/openssl/SCsub
@@ -668,7 +668,7 @@ if (env["openssl"] != "system"): # builtin
 	# Workaround for compilation error with GCC/Clang when -Werror is too greedy (GH-4517)
 	import os
 	import methods
-	if not (os.name=="nt" and methods.msvc_is_detected()): # not Windows and not MSVC
+	if not (os.name=="nt" and os.getenv("VSINSTALLDIR") != None): # not Windows and not MSVC
 		env_openssl.Append(CFLAGS = ["-Wno-error=implicit-function-declaration"])