diff --git a/Rubberduck.Inspections/Concrete/ParameterCanBeByValInspection.cs b/Rubberduck.Inspections/Concrete/ParameterCanBeByValInspection.cs
index c285cdc65b..8328cc3025 100644
--- a/Rubberduck.Inspections/Concrete/ParameterCanBeByValInspection.cs
+++ b/Rubberduck.Inspections/Concrete/ParameterCanBeByValInspection.cs
@@ -134,7 +134,7 @@ private static bool IsUsedAsByRefParam(IEnumerable<Declaration> declarations, De
 
                 foreach (var declaration in calledProcedureArgs)
                 {
-                    if (((VBAParser.ArgContext) declaration.Context).BYVAL() == null)
+                    if (((VBAParser.ArgContext) declaration.Context).BYVAL() != null)
                     {
                         continue;
                     }