diff --git a/src/thingdef/thingdef_expression.cpp b/src/thingdef/thingdef_expression.cpp
index 08b261bbf..85bc224b2 100644
--- a/src/thingdef/thingdef_expression.cpp
+++ b/src/thingdef/thingdef_expression.cpp
@@ -1576,6 +1576,7 @@ FxExpression *FxAbs::Resolve(FCompileContext &ctx)
 
 		case VAL_Float:
 			value.Float = fabs(value.Float);
+			break;
 
 		default:
 			// shouldn't happen