diff --git a/.github/workflows/meson-ci.yml b/.github/workflows/meson-ci.yml
index f07699061..925e6de90 100644
--- a/.github/workflows/meson-ci.yml
+++ b/.github/workflows/meson-ci.yml
@@ -44,7 +44,7 @@ jobs:
     - name : Build Open5GS
       run: ninja -C build
     - name: Test Open5GS
-      run: sudo meson test -C build -v core crypt sctp unit
+      run: sudo meson test -C build -v crypt sctp unit
 
   ubuntu-latest:
     name: Build and Test on Ubuntu Latest
diff --git a/tests/core/timer-test.c b/tests/core/timer-test.c
index 3510c950c..455e000bf 100644
--- a/tests/core/timer-test.c
+++ b/tests/core/timer-test.c
@@ -25,7 +25,7 @@
 #define TEST_DURATION           400000
 
 static uint8_t expire_check[TEST_DURATION/TEST_TIMER_PRECISION];
-static ogs_time_t timer_duration[] = { 500000, 50000, 200000, 190000, 800000 };
+static ogs_time_t timer_duration[] = { 500000, 50000, 200000, 90000, 800000 };
 
 void test_expire_func_1(void *data)
 {