diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index 81901e013aa4..fdfab1b5c957 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -3700,8 +3700,7 @@ riscv_ip (char *str, struct riscv_cl_insn *ip, expressionS *imm_expr,
 		      }
 		    else
 		      {
-			my_getExpression (imm_expr, asarg);
-			asarg = expr_parse_end;
+			goto unknown_riscv_ip_operand;
 		      }
 		    continue;
 		  default: