diff --git a/day 1/1.c b/day 1/1.c
index 7808f4d..89facf5 100644
--- a/day 1/1.c	
+++ b/day 1/1.c	
@@ -39,8 +39,8 @@ int main(void) {
   }
 
   for (size_t i = 0; i < lineCount - 1; i++) {
-    int leftMin = i;
-    int rightMin = i;
+    size_t leftMin = i;
+    size_t rightMin = i;
 
     for (size_t j = i + 1; j < lineCount; j++) {
       if (left[j] < left[leftMin]) {