diff --git a/.github/workflows/hello-apps.yml b/.github/workflows/hello-apps.yml
index 33131c347..981e0ffe2 100644
--- a/.github/workflows/hello-apps.yml
+++ b/.github/workflows/hello-apps.yml
@@ -15,7 +15,7 @@ jobs:
   smoketest:
     strategy:
       matrix:
-        logging: [ "OFF", "ON" ]
+        logging: [ "0", "1" ]
       fail-fast: false
     runs-on: "windows-2022"
     steps:
@@ -35,4 +35,4 @@ jobs:
         env:
           BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
           OPENSSL_ROOT_DIR: ${{ steps.install-openssl.outputs.OPENSSL_ROOT_DIR }}
-          LD_DEBUG_LOGGING: ${{ matrix.logging }}
+          CFLAGS: "-D_LD_DEBUG_LOGGING=${{ matrix.logging }}"
diff --git a/examples/hello-c-client/main.c b/examples/hello-c-client/main.c
index ba29d4dca..a4780b8b1 100644
--- a/examples/hello-c-client/main.c
+++ b/examples/hello-c-client/main.c
@@ -20,12 +20,15 @@
 
 char const* get_with_env_fallback(char const* source_val,
                                   char const* env_variable,
-                                  char const* error_msg);
+                                  char const* error);
 
-#define print(...)                    \
-    if (strcmp(logging, "ON") == 0) { \
-        printf(__VA_ARGS__);          \
-    }
+#if LD_DEBUG_LOGGING
+#define print(...) printf(__VA_ARGS__)
+#else
+#define print(...) \
+    do {           \
+    } while (0)
+#endif
 
 int main() {
     char const* mobile_key = get_with_env_fallback(
@@ -35,10 +38,9 @@ int main() {
         "variable.\n"
         "The value of MOBILE_KEY in main.c takes priority over LD_MOBILE_KEY.");
 
-    char const* logging = get_with_env_fallback(
-        "", "LD_DEBUG_LOGGING", "set LD_DEBUG_LOGGING to ON or OFF");
-
-    printf("Logging is: %s\n", logging);
+#if LD_DEBUG_LOGGING
+    printf("Debug logging enabled\n");
+#endif
 
     print("using mobile key: %s\n", mobile_key);
     LDClientConfigBuilder config_builder =