diff --git a/src/cmd/compile/internal/types2/const.go b/src/cmd/compile/internal/types2/const.go
index 9be578c6470861..af27c727dd2e70 100644
--- a/src/cmd/compile/internal/types2/const.go
+++ b/src/cmd/compile/internal/types2/const.go
@@ -73,7 +73,6 @@ func representableConst(x constant.Value, check *Checker, typ *Basic, rounded *c
 
 	sizeof := func(T Type) int64 {
 		s := conf.sizeof(T)
-		assert(s == 4 || s == 8)
 		return s
 	}
 
diff --git a/src/go/types/const.go b/src/go/types/const.go
index 66fa60804f5767..bffea146a0c7cb 100644
--- a/src/go/types/const.go
+++ b/src/go/types/const.go
@@ -74,7 +74,6 @@ func representableConst(x constant.Value, check *Checker, typ *Basic, rounded *c
 
 	sizeof := func(T Type) int64 {
 		s := conf.sizeof(T)
-		assert(s == 4 || s == 8)
 		return s
 	}