diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index 553fb11..2c5f795 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -4979,9 +4979,11 @@ struct __attribute__((visibility("hidden"))) ConflictSet::Impl {
         fprintf(stderr, "search path: %s, begin: %s\n",
                 getSearchPathPrintable(b).c_str(),
                 printable(context.results[i].remaining).c_str());
-        fprintf(stderr, "search path: %s, end: %s\n",
-                getSearchPathPrintable(e).c_str(),
-                printable(context.results[i].endRemaining).c_str());
+        if (e != nullptr) {
+          fprintf(stderr, "search path: %s, end: %s\n",
+                  getSearchPathPrintable(e).c_str(),
+                  printable(context.results[i].endRemaining).c_str());
+        }
       }
 #endif