diff --git a/src/compiler/glsl/glsl_lexer.ll b/src/compiler/glsl/glsl_lexer.ll
index e59f93e10ef..9704fc7ac4f 100644
--- a/src/compiler/glsl/glsl_lexer.ll
+++ b/src/compiler/glsl/glsl_lexer.ll
@@ -113,11 +113,7 @@ literal_integer(char *text, int len, struct _mesa_glsl_parse_state *state,
    if (base == 16)
       digits += 2;
 
-#ifdef _MSC_VER
-   unsigned __int64 value = _strtoui64(digits, NULL, base);
-#else
    unsigned long long value = strtoull(digits, NULL, base);
-#endif
 
    lval->n = (int)value;