diff --git a/testing/main.c b/testing/main.c
index 839db21..aa9bb45 100644
--- a/testing/main.c
+++ b/testing/main.c
@@ -180,19 +180,10 @@ int main(int argc, char *argv[])
 	return 0;
 }
 
-unsigned int capabilities;
-
 static void get_capabilities(unsigned int subd)
 {
-	int type;
-	int flags;
-
-	capabilities = 0;
-
-	type = comedi_get_subdevice_type(device,subd);
-
-	flags = comedi_get_subdevice_flags(device,subd);
-
+	comedi_get_subdevice_type(device,subd);
+	comedi_get_subdevice_flags(device,subd);
 }
 
 static void print_device_info(void)
diff --git a/testing/mmap.c b/testing/mmap.c
index 780d879..0f9efd2 100644
--- a/testing/mmap.c
+++ b/testing/mmap.c
@@ -31,7 +31,6 @@ void segv_handler(int num)
 
 int test_segfault(void *memptr)
 {
-	volatile char tmp;
 	int ret;
 	struct sigaction act;
 	struct sigaction oldact;
@@ -45,7 +44,7 @@ int test_segfault(void *memptr)
 		return 0;
 	}
 	ret=sigsetjmp(jump_env, 1);
-	if(!ret) tmp = *((char *)(memptr));
+	if(!ret) *((volatile char *)(memptr));
 	sigaction(SIGSEGV,&oldact,NULL);
 	return ret;
 }