diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp
index 5ba3516be..6ca34824e 100644
--- a/libsolidity/ast/Types.cpp
+++ b/libsolidity/ast/Types.cpp
@@ -940,7 +940,7 @@ BoolResult RationalNumberType::isExplicitlyConvertibleTo(Type const& _convertTo)
 	if (category == Category::FixedBytes)
 		return false;
 	else if (category == Category::Address)
-		return !(isNegative() || isFractional() || integerType()->numBits() > 160);
+		return !(isNegative() || isFractional() || !integerType() || integerType()->numBits() > 160);
 	else if (category == Category::Integer)
 		return false;
 	else if (auto enumType = dynamic_cast<EnumType const*>(&_convertTo))
diff --git a/test/libsolidity/syntaxTests/types/address/literal_to_address_oversized.sol b/test/libsolidity/syntaxTests/types/address/literal_to_address_oversized.sol
new file mode 100644
index 000000000..df362b2a4
--- /dev/null
+++ b/test/libsolidity/syntaxTests/types/address/literal_to_address_oversized.sol
@@ -0,0 +1,7 @@
+contract C {
+    function f() public pure {
+        address(0x11223345567aaaaaaaaaaaaaaaaaaaaaaaaaaaaa0112233445566778899001122);
+    }
+}
+// ----
+// TypeError 9640: (52-128): Explicit type conversion not allowed from "int_const 1239...(70 digits omitted)...8130" to "address".