diff --git a/tests/test_common/ma_test_common.c b/tests/test_common/ma_test_common.c
index 30b71b13..c6b8d7cf 100644
--- a/tests/test_common/ma_test_common.c
+++ b/tests/test_common/ma_test_common.c
@@ -25,7 +25,7 @@ typedef struct
     ma_test_entry_proc onEntry;
 } ma_test;
 
-struct
+static struct
 {
     ma_test pTests[MAX_TESTS];
     size_t count;
diff --git a/tests/test_deviceio/ma_test_deviceio.c b/tests/test_deviceio/ma_test_deviceio.c
index 691966c6..d9a5e407 100644
--- a/tests/test_deviceio/ma_test_deviceio.c
+++ b/tests/test_deviceio/ma_test_deviceio.c
@@ -51,7 +51,7 @@ typedef enum
     source_type_decoder
 } source_type;
 
-struct
+static struct
 {
     ma_context context;
     ma_device device;