diff --git a/Quake/common.h b/Quake/common.h
index d962875b..e90fa8e3 100644
--- a/Quake/common.h
+++ b/Quake/common.h
@@ -159,6 +159,11 @@ extern char *q_strupr (char *str);
 extern int q_snprintf (char *str, size_t size, const char *format, ...) FUNC_PRINTF(3,4);
 extern int q_vsnprintf(char *str, size_t size, const char *format, va_list args) FUNC_PRINTF(3,0);
 
+#define strcasecmp brokeninmsvc
+#define stricmp brokenportability
+#define strncasecmp brokeninmsvc
+#define strnicmp brokenportability
+
 //============================================================================
 
 extern	char		com_token[1024];
diff --git a/Quake/gl_texmgr.c b/Quake/gl_texmgr.c
index 3d41a72e..97f58be2 100644
--- a/Quake/gl_texmgr.c
+++ b/Quake/gl_texmgr.c
@@ -1214,7 +1214,7 @@ enum srcformat TexMgr_FormatForName (const char *code)
 	{
 		if (!compressedformats[i].formatname)
 			continue;
-		if (!strcasecmp(code, compressedformats[i].formatname))
+		if (!q_strcasecmp(code, compressedformats[i].formatname))
 			return i;
 	}
 	return SRC_EXTERNAL;
@@ -1226,7 +1226,7 @@ enum srcformat TexMgr_FormatForCode (const char *code)
 	{
 		if (!compressedformats[i].mipextname)
 			continue;
-		if (!strncasecmp(code, compressedformats[i].mipextname, 4))
+		if (!q_strncasecmp(code, compressedformats[i].mipextname, 4))
 			return i;
 	}
 	return SRC_EXTERNAL;