diff --git a/Source/CandidateUI/VTCandidateController.m b/Source/CandidateUI/VTCandidateController.m
index 933d1018..3b5f700a 100644
--- a/Source/CandidateUI/VTCandidateController.m
+++ b/Source/CandidateUI/VTCandidateController.m
@@ -47,8 +47,8 @@
     if (self) {
         // populate the default values        
         _keyLabels = @[@"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9"];
-        _keyLabelFont = [NSFont systemFontOfSize:14.0];
-        _candidateFont = [NSFont systemFontOfSize:18.0];
+        _keyLabelFont = [NSFont monospacedDigitSystemFontOfSize:14.0 weight:NSFontWeightMedium];
+        _candidateFont = [NSFont systemFontOfSize:18.0 weight:NSFontWeightRegular];
     }
     return self;
 }
diff --git a/Source/InputMethodController.mm b/Source/InputMethodController.mm
index 4606d272..ea8b3b5f 100644
--- a/Source/InputMethodController.mm
+++ b/Source/InputMethodController.mm
@@ -57,7 +57,7 @@ using namespace Formosa::Gramambular;
 using namespace OpenVanilla;
 
 // default, min and max candidate list text size
-static const NSInteger kDefaultCandidateListTextSize = 16;
+static const NSInteger kDefaultCandidateListTextSize = 18;
 static const NSInteger kMinKeyLabelSize = 10;
 static const NSInteger kMinCandidateListTextSize = 12;
 static const NSInteger kMaxCandidateListTextSize = 196;
@@ -1268,8 +1268,8 @@ static double FindHighestScore(const vector<NodeAnchor>& nodes, double epsilon)
     NSString *klFontName = [[NSUserDefaults standardUserDefaults] stringForKey:kCandidateKeyLabelFontName];
     NSString *ckeys = [[NSUserDefaults standardUserDefaults] stringForKey:kCandidateKeys];
 
-    gCurrentCandidateController.keyLabelFont = klFontName ? [NSFont fontWithName:klFontName size:keyLabelSize] : [NSFont systemFontOfSize:keyLabelSize];
-    gCurrentCandidateController.candidateFont = ctFontName ? [NSFont fontWithName:ctFontName size:textSize] : [NSFont systemFontOfSize:textSize];
+    gCurrentCandidateController.keyLabelFont = klFontName ? [NSFont fontWithName:klFontName size:keyLabelSize] : [NSFont monospacedDigitSystemFontOfSize:keyLabelSize weight:NSFontWeightMedium];
+    gCurrentCandidateController.candidateFont = ctFontName ? [NSFont fontWithName:ctFontName size:textSize] : [NSFont systemFontOfSize:textSize weight:NSFontWeightRegular];
 
     NSMutableArray *keyLabels = [NSMutableArray arrayWithObjects:@"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", nil];