diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
index 6359dc65d2263..ced081d429164 100644
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -16224,7 +16224,7 @@ bool SLPVectorizerPass::vectorizeGEPIndices(BasicBlock *BB, BoUpSLP &R) {
       for (auto *V : Candidates) {
         auto *GEP = cast<GetElementPtrInst>(V);
         auto *GEPIdx = GEP->idx_begin()->get();
-        assert(GEP->getNumIndices() == 1 || !isa<Constant>(GEPIdx));
+        assert(GEP->getNumIndices() == 1 && !isa<Constant>(GEPIdx));
         Bundle[BundleIndex++] = GEPIdx;
       }