diff --git a/src/BiomeDef.cpp b/src/BiomeDef.cpp
index 43f3ef0b1..bdc582863 100644
--- a/src/BiomeDef.cpp
+++ b/src/BiomeDef.cpp
@@ -223,7 +223,7 @@ bool IsBiomeCold(EMCSBiome a_Biome)
 
 
 
-int GetSnowStartHeight(EMCSBiome a_Biome)
+unsigned GetSnowStartHeight(EMCSBiome a_Biome)
 {
 	switch (a_Biome)
 	{
@@ -237,7 +237,7 @@ int GetSnowStartHeight(EMCSBiome a_Biome)
 		case biColdTaigaM:
 		{
 			// Always snow
-			return -1;
+			return 0;
 		}
 	
 		case biExtremeHills:
@@ -341,7 +341,7 @@ int GetSnowStartHeight(EMCSBiome a_Biome)
 
 		default:
 		{
-			return -1;
+			return 0;
 		}
 	}
 }
diff --git a/src/BiomeDef.h b/src/BiomeDef.h
index cda12556a..9b2369e5f 100644
--- a/src/BiomeDef.h
+++ b/src/BiomeDef.h
@@ -130,6 +130,6 @@ Doesn't report Very Cold biomes, use IsBiomeVeryCold() for those. */
 extern bool IsBiomeCold(EMCSBiome a_Biome);
 
 /** Returns the height when a biome when a biome starts snowing.*/
-extern int GetSnowStartHeight(EMCSBiome a_Biome);
+extern unsigned GetSnowStartHeight(EMCSBiome a_Biome);
 
 // tolua_end