diff --git a/engine/qclib/qcc_cmdlib.c b/engine/qclib/qcc_cmdlib.c
index 61be4805..f93e3e9c 100644
--- a/engine/qclib/qcc_cmdlib.c
+++ b/engine/qclib/qcc_cmdlib.c
@@ -11,7 +11,8 @@ extern jmp_buf qcccompileerror;
 #endif
 
 // I put the following here to resolve "undefined reference to `__imp__vsnprintf'" with MinGW64 ~ Moodles
-#ifdef _WIN32
+#ifdef __MINGW64__
+#ifndef QCCONLY
 	#if (_MSC_VER >= 1400)
 		//with MSVC 8, use MS extensions
 		#define snprintf linuxlike_snprintf_vc8
@@ -25,6 +26,7 @@ extern jmp_buf qcccompileerror;
 		int VARGS linuxlike_vsnprintf(char *buffer, int size, const char *format, va_list argptr);
 	#endif
 #endif
+#endif
 
 // set these before calling CheckParm
 int myargc;
diff --git a/engine/qclib/qcc_pr_lex.c b/engine/qclib/qcc_pr_lex.c
index afad3f1b..6e5f4200 100644
--- a/engine/qclib/qcc_pr_lex.c
+++ b/engine/qclib/qcc_pr_lex.c
@@ -7,7 +7,8 @@
 #include "time.h"
 
 // I put the following here to resolve "undefined reference to `__imp__vsnprintf'" with MinGW64 ~ Moodles
-#ifdef _WIN32
+#ifdef __MINGW64__
+#ifndef QCCONLY
 	#if (_MSC_VER >= 1400)
 		//with MSVC 8, use MS extensions
 		#define snprintf linuxlike_snprintf_vc8
@@ -21,6 +22,7 @@
 		int VARGS linuxlike_vsnprintf(char *buffer, int size, const char *format, va_list argptr);
 	#endif
 #endif
+#endif
 
 #define MEMBERFIELDNAME "__m%s"