diff --git a/include/afl-fuzz.h b/include/afl-fuzz.h
index 22f80567..ab93d282 100644
--- a/include/afl-fuzz.h
+++ b/include/afl-fuzz.h
@@ -770,6 +770,7 @@ typedef struct afl_state {
 #define FOREIGN_SYNCS_MAX 32U
   u8                  foreign_sync_cnt;
   struct foreign_sync foreign_syncs[FOREIGN_SYNCS_MAX];
+  char               *foreign_file;
 
 #ifdef _AFL_DOCUMENT_MUTATIONS
   u8  do_document;
diff --git a/src/afl-fuzz-bitmap.c b/src/afl-fuzz-bitmap.c
index e7c79c69..5d3cc71a 100644
--- a/src/afl-fuzz-bitmap.c
+++ b/src/afl-fuzz-bitmap.c
@@ -317,7 +317,15 @@ u8 *describe_op(afl_state_t *afl, u8 new_bits, size_t max_description_len) {
 
   if (unlikely(afl->syncing_party)) {
 
-    sprintf(ret, "sync:%s,src:%06u", afl->syncing_party, afl->syncing_case);
+    if (unlikely(afl->foreign_file)) {
+
+      sprintf(ret, "sync:%s,src:%.20s", afl->syncing_party, afl->foreign_file);
+
+    } else {
+
+      sprintf(ret, "sync:%s,src:%06u", afl->syncing_party, afl->syncing_case);
+
+    }
 
   } else {
 
diff --git a/src/afl-fuzz-init.c b/src/afl-fuzz-init.c
index 645d2cf2..382a3cd9 100644
--- a/src/afl-fuzz-init.c
+++ b/src/afl-fuzz-init.c
@@ -653,8 +653,9 @@ void read_foreign_testcases(afl_state_t *afl, int first) {
         u32 len = write_to_testcase(afl, (void **)&mem, st.st_size, 1);
         fault = fuzz_run_target(afl, &afl->fsrv, afl->fsrv.exec_tmout);
         afl->syncing_party = foreign_name;
+        afl->foreign_file = nl[i]->d_name;
         afl->queued_imported += save_if_interesting(afl, mem, len, fault);
-        afl->syncing_party = 0;
+
         munmap(mem, st.st_size);
         close(fd);
 
@@ -679,6 +680,9 @@ void read_foreign_testcases(afl_state_t *afl, int first) {
 
   }
 
+  afl->foreign_file = NULL;
+  afl->syncing_party = 0;
+
   if (first) {
 
     afl->last_find_time = 0;