diff --git a/onefile/shisen.c b/onefile/shisen.c
index baaa9e1..f0c1d0c 100644
--- a/onefile/shisen.c
+++ b/onefile/shisen.c
@@ -160,7 +160,7 @@ void generateBoard(int glyphsMask, int maxLetters) {
   int indices[COUNT];
   for(int i = 0; i < COUNT; ++i) indices[i] = i;
 
-  int lc = lettersCount > maxLetters ? lettersCount : maxLetters;
+  int lc = lettersCount < maxLetters ? lettersCount : maxLetters;
   for(int i = 0; i < COUNT; ++i) {
     int j = randomNumber(i, COUNT-1);
     int id = indices[j]; indices[j] = indices[i]; indices[i] = id;