diff --git a/graalpython/com.oracle.graal.python.processor/src/com/oracle/graal/python/processor/CApiBuiltinsProcessor.java b/graalpython/com.oracle.graal.python.processor/src/com/oracle/graal/python/processor/CApiBuiltinsProcessor.java
index 8e459f98dc..aca5e43819 100644
--- a/graalpython/com.oracle.graal.python.processor/src/com/oracle/graal/python/processor/CApiBuiltinsProcessor.java
+++ b/graalpython/com.oracle.graal.python.processor/src/com/oracle/graal/python/processor/CApiBuiltinsProcessor.java
@@ -1157,6 +1157,7 @@ private void generateCApiAsserts(List<CApiBuiltinDesc> allBuiltins) throws IOExc
             w.append("""
                             // @formatter:off
                             // Checkstyle: stop
+                            // JaCoCo Exclude
                             package %s;
 
                             import java.util.Set;