diff --git a/day_1/parser.y b/day_1/parser.y
index 53d1e01..e33370a 100644
--- a/day_1/parser.y
+++ b/day_1/parser.y
@@ -23,8 +23,12 @@
     #include "lexer.h"
 
     void push_value(struct parser_state* state) {
-        // TODO(feliix42): error handling here?
-        state->calorie_list = realloc(state->calorie_list, (state->size+1) * sizeof(unsigned long));
+        unsigned long* resized = realloc(state->calorie_list, (state->size+1) * sizeof(unsigned long));
+        if (!resized) {
+            fprintf(stderr, "\033[93m[error] Failed to allocate enough memory to resize the list of calories\033[0m\n");
+            return;
+        }
+        state->calorie_list = resized;
         state->calorie_list[state->size] = state->tmp_val;
         state->tmp_val = 0;
         state->size++;