diff --git a/lib/checkassert.cpp b/lib/checkassert.cpp
index 249337dd9..35ef6b462 100644
--- a/lib/checkassert.cpp
+++ b/lib/checkassert.cpp
@@ -49,6 +49,9 @@ void CheckAssert::assertWithSideEffects()
 
         const Token *endTok = tok->next()->link();
         for (const Token* tmp = tok->next(); tmp != endTok; tmp = tmp->next()) {
+            if (Token::simpleMatch(tmp, "sizeof ("))
+                tmp = tmp->linkAt(1);
+
             checkVariableAssignment(tmp, tok->scope());
 
             if (tmp->tokType() != Token::eFunction)
diff --git a/test/testassert.cpp b/test/testassert.cpp
index eac1f2339..efe957997 100644
--- a/test/testassert.cpp
+++ b/test/testassert.cpp
@@ -51,6 +51,7 @@ private:
         TEST_CASE(functionCallInAssert);
         TEST_CASE(memberFunctionCallInAssert);
         TEST_CASE(safeFunctionCallInAssert);
+        TEST_CASE(crash);
     }
 
 
@@ -236,6 +237,13 @@ private:
               "}\n");
         ASSERT_EQUALS("", errout.str());
     }
+
+    void crash() {
+        check("void foo() {\n"
+              "  assert(sizeof(struct { int a[x++]; })==sizeof(int));\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
+    }
 };
 
 REGISTER_TEST(TestAssert)