diff --git a/src/script_opt/ZAM/Support.cc b/src/script_opt/ZAM/Support.cc
index a9c25b2b7d..83d8828351 100644
--- a/src/script_opt/ZAM/Support.cc
+++ b/src/script_opt/ZAM/Support.cc
@@ -6,6 +6,7 @@
 
 #include "zeek/Desc.h"
 #include "zeek/Reporter.h"
+#include "zeek/ScriptValidation.h"
 #include "zeek/ZeekString.h"
 #include "zeek/script_opt/ProfileFunc.h"
 
@@ -33,6 +34,14 @@ bool is_ZAM_compilable(const ProfileFunc* pf, const char** reason)
 		return false;
 		}
 
+	auto b = pf->ProfiledBody();
+	if ( b && ! script_is_valid(b) )
+		{
+		if ( reason )
+			*reason = "invalid script body";
+		return false;
+		}
+
 	return true;
 	}