diff --git a/libsolidity/codegen/ir/IRGeneratorForStatements.cpp b/libsolidity/codegen/ir/IRGeneratorForStatements.cpp
index 7efaf8bb2..ae251fb7d 100644
--- a/libsolidity/codegen/ir/IRGeneratorForStatements.cpp
+++ b/libsolidity/codegen/ir/IRGeneratorForStatements.cpp
@@ -1946,7 +1946,7 @@ void IRGeneratorForStatements::endVisit(MemberAccess const& _memberAccess)
 			Type const* arg = dynamic_cast<MagicType const&>(*_memberAccess.expression().annotation().type).typeArgument();
 			solAssert(!!arg);
 			StructType const* structType = dynamic_cast<StructType const*>(arg);
-			solAssert(!structType);
+			solAssert(!!structType);
 			StructDefinition const& struct_ = structType->structDefinition();
 			define(_memberAccess) << "0x" << struct_.typehash() << "\n";
 		}