diff --git a/Source/UnitTests/Common/CommonFuncsTest.cpp b/Source/UnitTests/Common/CommonFuncsTest.cpp
index 81eb089e92..285b5f253e 100644
--- a/Source/UnitTests/Common/CommonFuncsTest.cpp
+++ b/Source/UnitTests/Common/CommonFuncsTest.cpp
@@ -11,8 +11,8 @@ TEST(CommonFuncs, ArraySizeMacro)
 	char test[4];
 	u32 test2[42];
 
-	EXPECT_EQ(4, ArraySize(test));
-	EXPECT_EQ(42, ArraySize(test2));
+	EXPECT_EQ(4u, ArraySize(test));
+	EXPECT_EQ(42u, ArraySize(test2));
 }
 
 TEST(CommonFuncs, RoundUpPow2Macro)
@@ -41,6 +41,6 @@ TEST(CommonFuncs, Swap)
 {
 	EXPECT_EQ(0xf0, Common::swap8(0xf0));
 	EXPECT_EQ(0x1234, Common::swap16(0x3412));
-	EXPECT_EQ(0x12345678, Common::swap32(0x78563412));
+	EXPECT_EQ(0x12345678u, Common::swap32(0x78563412));
 	EXPECT_EQ(0x123456789abcdef0ull, Common::swap64(0xf0debc9a78563412ull));
 }
diff --git a/Source/UnitTests/Common/FifoQueueTest.cpp b/Source/UnitTests/Common/FifoQueueTest.cpp
index 60135e699c..6530e15ddd 100644
--- a/Source/UnitTests/Common/FifoQueueTest.cpp
+++ b/Source/UnitTests/Common/FifoQueueTest.cpp
@@ -11,22 +11,22 @@ TEST(FifoQueue, Simple)
 {
 	Common::FifoQueue<u32> q;
 
-	EXPECT_EQ(0, q.Size());
+	EXPECT_EQ(0u, q.Size());
 	EXPECT_TRUE(q.Empty());
 
 	q.Push(1);
-	EXPECT_EQ(1, q.Size());
+	EXPECT_EQ(1u, q.Size());
 	EXPECT_FALSE(q.Empty());
 
 	u32 v; q.Pop(v);
-	EXPECT_EQ(1, v);
-	EXPECT_EQ(0, q.Size());
+	EXPECT_EQ(1u, v);
+	EXPECT_EQ(0u, q.Size());
 	EXPECT_TRUE(q.Empty());
 
 	// Test the FIFO order.
 	for (u32 i = 0; i < 1000; ++i)
 		q.Push(i);
-	EXPECT_EQ(1000, q.Size());
+	EXPECT_EQ(1000u, q.Size());
 	for (u32 i = 0; i < 1000; ++i)
 	{
 		u32 v2; q.Pop(v2);
diff --git a/Source/UnitTests/Common/FixedSizeQueueTest.cpp b/Source/UnitTests/Common/FixedSizeQueueTest.cpp
index 484dc64419..d77f3645f0 100644
--- a/Source/UnitTests/Common/FixedSizeQueueTest.cpp
+++ b/Source/UnitTests/Common/FixedSizeQueueTest.cpp
@@ -10,7 +10,7 @@ TEST(FixedSizeQueue, Simple)
 {
 	FixedSizeQueue<int, 5> q;
 
-	EXPECT_EQ(0, q.size());
+	EXPECT_EQ(0u, q.size());
 
 	q.push(0);
 	q.push(1);
@@ -29,5 +29,5 @@ TEST(FixedSizeQueue, Simple)
 	EXPECT_EQ(1003, q.pop_front());
 	EXPECT_EQ(1004, q.pop_front());
 
-	EXPECT_EQ(0, q.size());
+	EXPECT_EQ(0u, q.size());
 }