diff --git a/code/Importer.cpp b/code/Importer.cpp
index 876746445..ead61402c 100644
--- a/code/Importer.cpp
+++ b/code/Importer.cpp
@@ -927,11 +927,11 @@ void Importer::GetExtensionList(aiString& szOut) const
 // Set a configuration property
 bool Importer::SetPropertyInteger(const char* szName, int iValue)
 {
-	bool exising;
+	bool existing;
 	ASSIMP_BEGIN_EXCEPTION_REGION();
-		exising = SetGenericProperty<int>(pimpl->mIntProperties, szName,iValue);	
+		existing = SetGenericProperty<int>(pimpl->mIntProperties, szName,iValue);	
 	ASSIMP_END_EXCEPTION_REGION(bool);
-	return exising;
+	return existing;
 }
 
 // ------------------------------------------------------------------------------------------------
diff --git a/include/assimp/ai_assert.h b/include/assimp/ai_assert.h
index d753ea01d..202446009 100644
--- a/include/assimp/ai_assert.h
+++ b/include/assimp/ai_assert.h
@@ -5,7 +5,7 @@
 
 #ifdef ASSIMP_BUILD_DEBUG  
 #	include <assert.h>
-#	define	ai_assert(expression) assert(expression);
+#	define	ai_assert(expression) assert(expression)
 #else
 #	define	ai_assert(expression)
 #endif