diff --git a/csharp/ql/lib/semmle/code/csharp/Callable.qll b/csharp/ql/lib/semmle/code/csharp/Callable.qll
index 9416a7d4d9c..198ad2af180 100644
--- a/csharp/ql/lib/semmle/code/csharp/Callable.qll
+++ b/csharp/ql/lib/semmle/code/csharp/Callable.qll
@@ -613,6 +613,9 @@ class UnaryOperator extends Operator {
     this.getNumberOfParameters() = 1 and
     not this instanceof ConversionOperator and
     not this instanceof CompoundAssignmentOperator
+    or
+    // Instance increment and decrement operators don't have a parameter (only a qualifier).
+    this.getNumberOfParameters() = 0 and not this.isStatic()
   }
 }