diff --git a/common/DiffractionExperiment.cpp b/common/DiffractionExperiment.cpp
index 4e1bf3d9b..d01da5c51 100644
--- a/common/DiffractionExperiment.cpp
+++ b/common/DiffractionExperiment.cpp
@@ -1710,7 +1710,8 @@ IndexingAlgorithmEnum DiffractionExperiment::GetIndexingAlgorithm() const {
                 return IndexingAlgorithmEnum::FFT;
             return IndexingAlgorithmEnum::FFBIDX;
         case IndexingAlgorithmEnum::FFT:
-            return IndexingAlgorithmEnum::FFT;
+            // No silent switch to FFTW, too slow for live stills: a missing GPU turns indexing off
+            return get_gpu_count() == 0 ? IndexingAlgorithmEnum::None : IndexingAlgorithmEnum::FFT;
         case IndexingAlgorithmEnum::FFTW:
             return IndexingAlgorithmEnum::FFTW;
         default: