diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l
index 9187926146a..a14e580ab1a 100644
--- a/src/glsl/glcpp/glcpp-lex.l
+++ b/src/glsl/glcpp/glcpp-lex.l
@@ -70,10 +70,7 @@ HEXADECIMAL_INTEGER	0[xX][0-9a-fA-F]+[uU]?
 %%
 
 	/* Single-line comments */
-"//"[^\n]*\n {
-	yylineno++;
-	yycolumn = 0;
-	return NEWLINE;
+"//"[^\n]* {
 }
 
 	/* Multi-line comments */