diff --git a/src/Futhark/CodeGen/ImpGen/GPU/SegScan/SinglePass.hs b/src/Futhark/CodeGen/ImpGen/GPU/SegScan/SinglePass.hs
index 4dbe3fb56f..b1473cb15e 100644
--- a/src/Futhark/CodeGen/ImpGen/GPU/SegScan/SinglePass.hs
+++ b/src/Futhark/CodeGen/ImpGen/GPU/SegScan/SinglePass.hs
@@ -359,7 +359,7 @@ compileSegScan pat lvl space scanOp kbody = do
         sFor "i" m $ \i -> do
           sharedIdx <- dPrimV "sharedIdx" $ kernelLocalThreadId constants * m + i
           copyDWIMFix priv [sExt64 i] (Var trans) [sExt64 $ tvExp sharedIdx]
-      sOp localBarrier
+    sOp $ Imp.ErrorSync Imp.FenceLocal
 
     sComment "Per thread scan" $ do
       -- We don't need to touch the first element, so only m-1