diff --git a/jungfrau/JFConversionFixedPoint.cpp b/jungfrau/JFConversionFixedPoint.cpp
index e9eb83e1..dc218d23 100644
--- a/jungfrau/JFConversionFixedPoint.cpp
+++ b/jungfrau/JFConversionFixedPoint.cpp
@@ -62,7 +62,7 @@ inline int32_t jf_round(int32_t in) {
         return in - half;
 }
 
-void JFConversionFixedPoint::ConvertModule(int16_t *dest, const uint16_t *source) {
+void JFConversionFixedPoint::ConvertModule(int16_t *__restrict dest, const uint16_t *source) {
     auto gain_g0_aligned = std::assume_aligned<64>(gain_g0);
     auto gain_g1_aligned = std::assume_aligned<64>(gain_g1);
     auto gain_g2_aligned = std::assume_aligned<64>(gain_g2);