diff --git a/libcutils/tests/PropertiesTest.cpp b/libcutils/tests/PropertiesTest.cpp
index 22ca7069d..5f2396b0b 100644
--- a/libcutils/tests/PropertiesTest.cpp
+++ b/libcutils/tests/PropertiesTest.cpp
@@ -106,14 +106,14 @@ TEST_F(PropertiesTest, SetString) {
         ResetValue();
 
         // Since the value is null, default value will be returned
-        int len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);
+        size_t len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);
         EXPECT_EQ(strlen(PROPERTY_TEST_VALUE_DEFAULT), len);
         EXPECT_STREQ(PROPERTY_TEST_VALUE_DEFAULT, mValue);
     }
 
     // Trivial case => get returns what was set
     {
-        int len = SetAndGetProperty("hello_world");
+        size_t len = SetAndGetProperty("hello_world");
         EXPECT_EQ(strlen("hello_world"), len) << "hello_world key";
         EXPECT_STREQ("hello_world", mValue);
         ResetValue();
@@ -122,7 +122,7 @@ TEST_F(PropertiesTest, SetString) {
     // Set to empty string => get returns default always
     {
         const char* EMPTY_STRING_DEFAULT = "EMPTY_STRING";
-        int len = SetAndGetProperty("", EMPTY_STRING_DEFAULT);
+        size_t len = SetAndGetProperty("", EMPTY_STRING_DEFAULT);
         EXPECT_EQ(strlen(EMPTY_STRING_DEFAULT), len) << "empty key";
         EXPECT_STREQ(EMPTY_STRING_DEFAULT, mValue);
         ResetValue();
@@ -147,7 +147,7 @@ TEST_F(PropertiesTest, SetString) {
 
         // Expect that the value set fails since it's too long
         EXPECT_GT(0, property_set(PROPERTY_TEST_KEY, oneLongerString.c_str()));
-        int len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);
+        size_t len = property_get(PROPERTY_TEST_KEY, mValue, PROPERTY_TEST_VALUE_DEFAULT);
 
         EXPECT_EQ(strlen(VALID_TEST_VALUE), len) << "set should've failed";
         EXPECT_STREQ(VALID_TEST_VALUE, mValue);
diff --git a/libutils/tests/Vector_test.cpp b/libutils/tests/Vector_test.cpp
index d9b32f9e9..24ecf86a0 100644
--- a/libutils/tests/Vector_test.cpp
+++ b/libutils/tests/Vector_test.cpp
@@ -89,9 +89,9 @@ TEST_F(VectorTest, SetCapacity_ShrinkBelowSize) {
   vector.add(4);
 
   vector.setCapacity(8);
-  ASSERT_EQ(8, vector.capacity());
+  ASSERT_EQ(8U, vector.capacity());
   vector.setCapacity(2);
-  ASSERT_EQ(8, vector.capacity());
+  ASSERT_EQ(8U, vector.capacity());
 }
 
 // NOTE: All of the tests below are useless because of the "TODO" above.