diff --git a/src/Assert.hpp b/src/Assert.hpp
index 983ad03..848a452 100644
--- a/src/Assert.hpp
+++ b/src/Assert.hpp
@@ -9,7 +9,7 @@
 #ifndef NO_ASSERT
 #define Assert(expr)                                                                                                   \
     {                                                                                                                  \
-        if (!expr) {                                                                                                   \
+        if (!(expr)) {                                                                                                   \
             std::stringstream ss;                                                                                      \
             ss << "ASSERTION FAILED: [" << __FILENAME__ << " (" << __LINE__ << ")] \"";                                \
             ss << #expr << "\"";                                                                                       \
diff --git a/tests/AssertTests.cpp b/tests/AssertTests.cpp
index bbac7f8..99c9f7d 100644
--- a/tests/AssertTests.cpp
+++ b/tests/AssertTests.cpp
@@ -1,6 +1,7 @@
 #include "../extern/catch.hpp"
 #include "../src/Assert.hpp"
 void TestWrapper(bool wrapperExpression){Assert(wrapperExpression)}
+void TestWrapperNotNull(void* value){AssertNotNull(value)}
 
 TEST_CASE("Assert succeeds if true", "[Utilities]") {
     REQUIRE_NOTHROW(TestWrapper(true));
@@ -12,3 +13,5 @@ TEST_CASE("Assert throws if false with message", "[Utilities]") {
     REQUIRE_THROWS_WITH(TestWrapper(false),
                         Catch::Matchers::Equals("ASSERTION FAILED: [AssertTests.cpp (3)] \"wrapperExpression\""));
 }
+
+TEST_CASE("AssertNotNull throws if nullptr", "[Utilities]") { REQUIRE_THROWS(TestWrapperNotNull(nullptr)); }