diff --git a/src/common/objects/dobjgc.cpp b/src/common/objects/dobjgc.cpp
index 9baffc3a3..ac75b411a 100644
--- a/src/common/objects/dobjgc.cpp
+++ b/src/common/objects/dobjgc.cpp
@@ -721,7 +721,7 @@ FAveragizer::FAveragizer()
 void FAveragizer::AddAlloc(size_t alloc)
 {
 	NewestPos = (NewestPos + 1) & (HistorySize - 1);
-	if (TotalCount < HistorySize)
+	if (TotalCount < (int)HistorySize)
 	{
 		TotalCount++;
 	}
diff --git a/src/scripting/vmthunks.cpp b/src/scripting/vmthunks.cpp
index d672a5192..38735a96d 100644
--- a/src/scripting/vmthunks.cpp
+++ b/src/scripting/vmthunks.cpp
@@ -2295,7 +2295,7 @@ DEFINE_ACTION_FUNCTION(FLevelLocals, GetChecksum)
 
 	for (int j = 0; j < 16; ++j)
 	{
-		sprintf(md5string + j * 2, "%02x", self->md5[j]);
+		snprintf(md5string + j * 2, 3, "%02x", self->md5[j]);
 	}
 
 	ACTION_RETURN_STRING((const char*)md5string);
@@ -2692,7 +2692,7 @@ DEFINE_ACTION_FUNCTION(_LevelInfo, MapChecksum)
 		map->GetChecksum(cksum);
 		for (int j = 0; j < 16; ++j)
 		{
-			sprintf(md5string + j * 2, "%02x", cksum[j]);
+			snprintf(md5string + j * 2, 3, "%02x", cksum[j]);
 		}
 		delete map;
 	}