diff --git a/src/fmm.c b/src/fmm.c
index 463a3e2fd1..fc588a1617 100644
--- a/src/fmm.c
+++ b/src/fmm.c
@@ -1335,7 +1335,7 @@ void *fmm_allocate_device(uint32_t gpu_id, void *address, uint64_t MemorySizeInB
 		aperture = &gpu_mem[gpu_mem_id].gpuvm_aperture;
 	}
 
-	if (!flags.ui32.CoarseGrain)
+	if (!flags.ui32.CoarseGrain || svm.disable_cache)
 		ioc_flags |= KFD_IOC_ALLOC_MEM_FLAGS_COHERENT;
 
 	if (flags.ui32.Uncached || svm.disable_cache)
@@ -1544,7 +1544,7 @@ static void *fmm_allocate_host_gpu(uint32_t node_id, void *address,
 	else
 		aperture = svm.dgpu_alt_aperture; /* always coherent */
 
-	if (!flags.ui32.CoarseGrain)
+	if (!flags.ui32.CoarseGrain || svm.disable_cache)
 		ioc_flags |= KFD_IOC_ALLOC_MEM_FLAGS_COHERENT;
 
 	if (flags.ui32.Uncached || svm.disable_cache)