diff --git a/source/exhumed/src/sound.cpp b/source/exhumed/src/sound.cpp
index 5990a9e3f..84ef80cdd 100644
--- a/source/exhumed/src/sound.cpp
+++ b/source/exhumed/src/sound.cpp
@@ -440,6 +440,8 @@ void EXSoundEngine::CalcPosVel(int type, const void* source, const float pt[3],
         }
         auto fcampos = GetSoundPos(&campos);
 
+        if (vel) vel->Zero();
+
         if (type == SOURCE_Ambient)
         {
             *pos = *(FVector3*)source;