diff --git a/promql/parser/generated_parser.y b/promql/parser/generated_parser.y
index ca710b1ab0..cdb4532d3b 100644
--- a/promql/parser/generated_parser.y
+++ b/promql/parser/generated_parser.y
@@ -488,7 +488,7 @@ matrix_selector : expr LEFT_BRACKET number_duration_literal RIGHT_BRACKET
 
                         if errMsg != ""{
                                 errRange := mergeRanges(&$2, &$4)
-                                yylex.(*parser).addParseErrf(errRange, errMsg)
+                                yylex.(*parser).addParseErrf(errRange, "%s", errMsg)
                         }
 
 			numLit, _ := $3.(*NumberLiteral)
diff --git a/promql/parser/generated_parser.y.go b/promql/parser/generated_parser.y.go
index 04bc081f2f..78d5e15245 100644
--- a/promql/parser/generated_parser.y.go
+++ b/promql/parser/generated_parser.y.go
@@ -1385,7 +1385,7 @@ yydefault:
 
 			if errMsg != "" {
 				errRange := mergeRanges(&yyDollar[2].item, &yyDollar[4].item)
-				yylex.(*parser).addParseErrf(errRange, errMsg)
+				yylex.(*parser).addParseErrf(errRange, "%s", errMsg)
 			}
 
 			numLit, _ := yyDollar[3].node.(*NumberLiteral)