diff --git a/src/core/model/breakpoint.cc b/src/core/model/breakpoint.cc
index a10bf1c23..4ae8637fb 100644
--- a/src/core/model/breakpoint.cc
+++ b/src/core/model/breakpoint.cc
@@ -63,7 +63,7 @@ BreakpointFallback()
      */
     if (a == nullptr)
     {
-        *a = nullptr;
+        *a = 0;
     }
 }