diff --git a/tools/qfcc/include/qfcc.h b/tools/qfcc/include/qfcc.h
index 00f4feacb..ec1a258f6 100644
--- a/tools/qfcc/include/qfcc.h
+++ b/tools/qfcc/include/qfcc.h
@@ -108,6 +108,13 @@ extern FILE *yyin;
 int yyparse (void);
 extern int yydebug;
 
+#ifdef _WIN32
+char *fix_backslash (const char *path);
+#define NORMALIZE(x) fix_backslash (x)
+#else
+#define NORMALIZE(x) x
+#endif
+
 #define ALLOC(s, t, n, v)							\
 	do {											\
 		if (!free_##n) {							\
diff --git a/tools/qfcc/source/options.c b/tools/qfcc/source/options.c
index 1286ccabe..ccea7538b 100644
--- a/tools/qfcc/source/options.c
+++ b/tools/qfcc/source/options.c
@@ -169,7 +169,7 @@ DecodeArgs (int argc, char **argv)
 		   != EOF) {
 		switch (c) {
 			case 1:						// ordinary file
-				add_file (optarg);
+				add_file (NORMALIZE (optarg));
 				break;
 			case 'o':
 				if (options.output_file) {
@@ -177,14 +177,14 @@ DecodeArgs (int argc, char **argv)
 							 this_program);
 					exit (1);
 				} else {
-					options.output_file = save_string (optarg);
+					options.output_file = save_string (NORMALIZE (optarg));
 				}
 				break;
 			case 'l':					// lib file
-				add_file (va ("-l%s", optarg));
+				add_file (va ("-l%s", NORMALIZE (optarg)));
 				break;
 			case 'L':
-				linker_add_path (optarg);
+				linker_add_path (NORMALIZE (optarg));
 				break;
 			case 'h':					// help
 				usage (0);
@@ -194,10 +194,10 @@ DecodeArgs (int argc, char **argv)
 				exit (0);
 				break;
 			case 's':					// src dir
-				sourcedir = save_string (optarg);
+				sourcedir = save_string (NORMALIZE (optarg));
 				break;
 			case 'P':					// progs-src
-				progs_src = save_string (optarg);
+				progs_src = save_string (NORMALIZE (optarg));
 				break;
 			case 'p':
 				options.strip_path = atoi (optarg);
diff --git a/tools/qfcc/source/qfcc.c b/tools/qfcc/source/qfcc.c
index 367941d2b..be0f89fff 100644
--- a/tools/qfcc/source/qfcc.c
+++ b/tools/qfcc/source/qfcc.c
@@ -124,6 +124,19 @@ save_string (const char *str)
 	return s;
 }
 
+#ifdef _WIN32
+char *
+fix_backslash (char *path)
+{
+	char       *s;
+
+	for (s = path; *s; s++)
+		if (*s == '\\')
+			*s = '/';
+	return path;
+}
+#endif
+
 static void
 InitData (void)
 {
@@ -729,7 +742,7 @@ main (int argc, char **argv)
 
 	start = Sys_DoubleTime ();
 
-	this_program = argv[0];
+	this_program = NORMALIZE (argv[0]);
 
 	DecodeArgs (argc, argv);