diff --git a/du3/program.c b/du3/program.c
index 0e3eff5..78e7edd 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -46,7 +46,7 @@ float pop_stack(struct stack* s) {
 
 void print_stack(struct stack* stack) {
     for (int i = 0; i<stack->size; i++) {
-        printf("%.2f", stack->values[i]);
+        printf("%.2f ", stack->values[i]);
     }
     printf("\n");
 }