diff --git a/clang/lib/CIR/CodeGen/CIRGenBuilder.h b/clang/lib/CIR/CodeGen/CIRGenBuilder.h
index 7208e12fec5d..adc3bc4efc50 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuilder.h
+++ b/clang/lib/CIR/CodeGen/CIRGenBuilder.h
@@ -529,7 +529,8 @@ class CIRGenBuilderTy : public cir::CIRBaseBuilderTy {
 
   bool isSized(mlir::Type ty) {
     if (mlir::isa<cir::PointerType, cir::RecordType, cir::ArrayType,
-                  cir::BoolType, cir::IntType, cir::CIRFPTypeInterface>(ty))
+                  cir::BoolType, cir::IntType, cir::CIRFPTypeInterface,
+                  cir::ComplexType>(ty))
       return true;
     if (mlir::isa<cir::VectorType>(ty)) {
       return isSized(mlir::cast<cir::VectorType>(ty).getElementType());
diff --git a/clang/test/CIR/CodeGen/array.cpp b/clang/test/CIR/CodeGen/array.cpp
index 51e9044be202..f62a8ff49b13 100644
--- a/clang/test/CIR/CodeGen/array.cpp
+++ b/clang/test/CIR/CodeGen/array.cpp
@@ -90,3 +90,7 @@ void testPointerDecayedArrayMultiDimSubscriptAccess(int arr[][3]) {
   // CHECK: %[[#V5:]] = cir.cast(array_to_ptrdecay, %[[#V3]] : !cir.ptr<!cir.array<!s32i x 3>>), !cir.ptr<!s32i>
   // CHECK: cir.ptr_stride(%[[#V5]] : !cir.ptr<!s32i>, %[[#V4]] : !s32i), !cir.ptr<!s32i>
 }
+
+void testArrayOfComplexType() { int _Complex a[4]; }
+
+// CHECK: %[[ARR:.*]] = cir.alloca !cir.array<!cir.complex<!s32i> x 4>, !cir.ptr<!cir.array<!cir.complex<!s32i> x 4>>, ["a"]