diff --git a/stepmania/src/Course.h b/stepmania/src/Course.h
index 368bfc3b9e..92c3075dd1 100644
--- a/stepmania/src/Course.h
+++ b/stepmania/src/Course.h
@@ -161,7 +161,7 @@ public:
 
 		void AddHighScore( HighScore hs, int &iIndexOut )
 		{
-			for( int i=0; i<vHighScores.size() && i<NUM_RANKING_LINES; i++ )
+			for( int i=0; i<(int)vHighScores.size() && i<NUM_RANKING_LINES; i++ )
 			{
 				if( hs > vHighScores[i] )
 				{
diff --git a/stepmania/src/SongManager.h b/stepmania/src/SongManager.h
index 8fc78ef768..363b167a7e 100644
--- a/stepmania/src/SongManager.h
+++ b/stepmania/src/SongManager.h
@@ -110,7 +110,7 @@ public:
 
 		void AddHighScore( HighScore hs, int &iIndexOut )
 		{
-			for( int i=0; i<vHighScores.size() && i<NUM_RANKING_LINES; i++ )
+			for( int i=0; i<(int)vHighScores.size() && i<NUM_RANKING_LINES; i++ )
 			{
 				if( hs > vHighScores[i] )
 				{
diff --git a/stepmania/src/Steps.h b/stepmania/src/Steps.h
index a3e9fe5c7f..6329f5798b 100644
--- a/stepmania/src/Steps.h
+++ b/stepmania/src/Steps.h
@@ -95,7 +95,7 @@ public:
 
 		void AddHighScore( MemCardData::HighScore hs, int &iIndexOut )
 		{
-			for( int i=0; i<vHighScores.size() && i<NUM_RANKING_LINES; i++ )
+			for( int i=0; i<(int)vHighScores.size() && i<NUM_RANKING_LINES; i++ )
 			{
 				if( hs > vHighScores[i] )
 				{