diff --git a/src/modules/sound/SoundData.cpp b/src/modules/sound/SoundData.cpp
index f0646f67f..7fb5b4476 100644
--- a/src/modules/sound/SoundData.cpp
+++ b/src/modules/sound/SoundData.cpp
@@ -147,9 +147,9 @@ int SoundData::getSampleRate() const
 	return sampleRate;
 }
 
-int SoundData::getDuration() const
+float SoundData::getDuration() const
 {
-	return size/(channels*sampleRate*bits/8);
+	return float(size) / (channels*sampleRate*bits/8);
 }
 
 void SoundData::setSample(int i, float sample)
diff --git a/src/modules/sound/SoundData.h b/src/modules/sound/SoundData.h
index 09a40c60a..aea05e3a1 100644
--- a/src/modules/sound/SoundData.h
+++ b/src/modules/sound/SoundData.h
@@ -49,7 +49,7 @@ public:
 	virtual int getBits() const;
 	virtual int getSampleRate() const;
 
-	virtual int getDuration() const;
+	virtual float getDuration() const;
 
 	void setSample(int i, float sample);
 	float getSample(int i) const;
diff --git a/src/modules/sound/wrap_SoundData.cpp b/src/modules/sound/wrap_SoundData.cpp
index 86693b003..19f65ed8a 100644
--- a/src/modules/sound/wrap_SoundData.cpp
+++ b/src/modules/sound/wrap_SoundData.cpp
@@ -56,7 +56,7 @@ int w_SoundData_getSampleRate(lua_State *L)
 int w_SoundData_getDuration(lua_State *L)
 {
 	SoundData *t = luax_checksounddata(L, 1);
-	lua_pushinteger(L, t->getDuration());
+	lua_pushnumber(L, t->getDuration());
 	return 1;
 }