diff --git a/openbsc/tests/channel/channel_test.c b/openbsc/tests/channel/channel_test.c
index 32c7168..61c0f95 100644
--- a/openbsc/tests/channel/channel_test.c
+++ b/openbsc/tests/channel/channel_test.c
@@ -46,7 +46,7 @@
 }
 
 
-int main(int argc, char** argv)
+int main(int argc, char **argv)
 {
 	struct gsm_network *network;
 	struct gsm_bts *bts;
diff --git a/openbsc/tests/debug/debug_test.c b/openbsc/tests/debug/debug_test.c
index f3e4837..5767edd 100644
--- a/openbsc/tests/debug/debug_test.c
+++ b/openbsc/tests/debug/debug_test.c
@@ -22,7 +22,7 @@
 #include <openbsc/debug.h>
 
 
-int main(int argc, char** argv)
+int main(int argc, char **argv)
 {
 	struct log_target *stderr_target;
 
diff --git a/openbsc/tests/gsm0408/gsm0408_test.c b/openbsc/tests/gsm0408/gsm0408_test.c
index 287d4ee..58377e6 100644
--- a/openbsc/tests/gsm0408/gsm0408_test.c
+++ b/openbsc/tests/gsm0408/gsm0408_test.c
@@ -95,7 +95,7 @@
 	COMPARE_STR(mi_parsed, imsi_even);
 }
 
-int main(int argc, char** argv)
+int main(int argc, char **argv)
 {
 	test_location_area_identifier();
 	test_mi_functionality();