diff --git a/AllTests.c b/AllTests.c
index 04129af..b5d901d 100644
--- a/AllTests.c
+++ b/AllTests.c
@@ -2,8 +2,8 @@
 
 #include "CuTest.h"
 
-CuSuite* CuGetSuite();
-CuSuite* CuStringGetSuite();
+CuSuite* CuGetSuite(void);
+CuSuite* CuStringGetSuite(void);
 
 int RunAllTests(void)
 {
diff --git a/CuTestTest.c b/CuTestTest.c
index 547f119..8e90768 100644
--- a/CuTestTest.c
+++ b/CuTestTest.c
@@ -213,7 +213,7 @@ void TestCuAssertPtrEquals_Failure(CuTest* tc)
 	CuTestInit(&tc2, "MyTest", TestPasses);
 
 	/* test failing case */
-	sprintf(expected_message, "expected pointer <0x%p> but was <0x%p>", nullPtr, &x);
+	sprintf(expected_message, "expected pointer <0x%p> but was <0x%p>", (void*)nullPtr, (void*)&x);
 	CuAssertPtrEquals(&tc2, NULL, &x);
 	CuAssertTrue(tc, tc2.failed);
 	CompareAsserts(tc, "CuAssertPtrEquals failed", expected_message, tc2.message);