diff --git a/tests/internal/fuzzers/config_map_fuzzer.c b/tests/internal/fuzzers/config_map_fuzzer.c
index 79697f65165..d62afd8011b 100644
--- a/tests/internal/fuzzers/config_map_fuzzer.c
+++ b/tests/internal/fuzzers/config_map_fuzzer.c
@@ -13,7 +13,7 @@ struct context {
     int num_int;
     size_t size;
     time_t time;
-    char boolean;
+    int boolean;
     double num_double;
     flb_sds_t string;
     struct mk_list *list1;