diff --git a/tests/Android.mk b/tests/Android.mk
index 890e203..59fe57d 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -86,6 +86,7 @@
     regex_test.cpp \
     sched_test.cpp \
     search_test.cpp \
+    semaphore_test.cpp \
     signal_test.cpp \
     stack_protector_test.cpp \
     stdatomic_test.cpp \