diff --git a/src/cmd/compile/internal/gc/const.go b/src/cmd/compile/internal/gc/const.go
index 18f8d352e9..825f08ca8a 100644
--- a/src/cmd/compile/internal/gc/const.go
+++ b/src/cmd/compile/internal/gc/const.go
@@ -643,17 +643,6 @@ func evconst(n *Node) {
 					i2++
 				}
 
-				// Hack to appease toolstash. Because
-				// we were checking isGoConst early
-				// on, we wouldn't collapse adjacent
-				// string constants unless the entire
-				// string was a constant.
-				//
-				// TODO(mdempsky): Remove in next commit.
-				if i1 != 0 || i2 != len(s) {
-					return
-				}
-
 				nl := *s[i1]
 				nl.Orig = &nl
 				nl.SetVal(Val{strings.Join(strs, "")})