diff --git a/libpkgconf/argvsplit.c b/libpkgconf/argvsplit.c
index 02ce1a3..aaba858 100644
--- a/libpkgconf/argvsplit.c
+++ b/libpkgconf/argvsplit.c
@@ -118,9 +118,11 @@ pkgconf_argv_split(const char *src, int *argc, char ***argv)
 		}
 		else switch(*src_iter)
 		{
+#ifndef _WIN32
 			case '\\':
 				escaped = true;
 				break;
+#endif
 
 			case '\"':
 			case '\'':
diff --git a/libpkgconf/fragment.c b/libpkgconf/fragment.c
index 37830c8..1937f33 100644
--- a/libpkgconf/fragment.c
+++ b/libpkgconf/fragment.c
@@ -433,7 +433,11 @@ fragment_quote(const pkgconf_fragment_t *frag)
 		    (*src > ')' && *src < '+') ||
 		    (*src > ':' && *src < '=') ||
 		    (*src > '=' && *src < '@') ||
-		    (*src > 'Z' && *src < '^') ||
+		    (*src > 'Z' && *src < '\\') ||
+#ifndef _WIN32
+		    (*src == '\\') ||
+#endif
+		    (*src > '\\' && *src < '^') ||
 		    (*src == '`') ||
 		    (*src > 'z' && *src < '~') ||
 		    (*src > '~')))