diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 25878a89..67d30d8a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -157,7 +157,7 @@ jobs:
     - name: Test
       working-directory: ${{runner.workspace}}/build
       shell: bash
-      run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend" PATH=$PATH:"$(pwd)/frontend" ctest -VV -C $BUILD_TYPE
+      run: LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"$(pwd)/backend" PATH=$PATH:"$(pwd)/frontend" ctest -V -C $BUILD_TYPE
 
   build-macOS-sanitize:
     runs-on: macOS-latest
diff --git a/backend/tests/test_common.c b/backend/tests/test_common.c
index 9f964483..2119bf21 100644
--- a/backend/tests/test_common.c
+++ b/backend/tests/test_common.c
@@ -1063,7 +1063,7 @@ static void test_rt_cpy_seg(const testCtx *const p_ctx) {
     const int data_size = ARRAY_SIZE(data);
     int i, ret;
 
-    struct zint_symbol s_symbol;
+    struct zint_symbol s_symbol = {0};
     struct zint_symbol *symbol = &s_symbol;
     int expected_length;
 
@@ -1149,7 +1149,7 @@ static void test_rt_cpy(const testCtx *const p_ctx) {
     const int data_size = ARRAY_SIZE(data);
     int i, length, ret;
 
-    struct zint_symbol s_symbol;
+    struct zint_symbol s_symbol = {0};
     struct zint_symbol *symbol = &s_symbol;
     int expected_length;
 
@@ -1221,7 +1221,7 @@ static void test_rt_printf_256(const testCtx *const p_ctx) {
     const int data_size = ARRAY_SIZE(data);
     int i, ret;
 
-    struct zint_symbol s_symbol;
+    struct zint_symbol s_symbol = {0};
     struct zint_symbol *symbol = &s_symbol;
     int expected_length;