diff --git a/librarytrader/library.py b/librarytrader/library.py
index 472331666931530867ba5242e6f29b83791c3014..ff66a2ac0ac4b4acdae6e5332a0d86b3afbab763 100644
--- a/librarytrader/library.py
+++ b/librarytrader/library.py
@@ -152,6 +152,8 @@ class Library:
         self.parse_time = 0
         self.total_disas_time = 0
 
+        self.external_debug_file = None
+
         if parse:
             self.parse_functions()
 
@@ -912,7 +914,7 @@ class Library:
                     if fd > 0:
                         external_elf = ELFFile(os.fdopen(fd, 'rb'))
                         symtab = external_elf.get_section_by_name('.symtab')
-                        external_path = path
+                        external_path = path.decode('utf-8')
             except (ELFError, OSError, FileNotFoundError) as e:
                 logging.debug('debuginfod query failed: %s', e)
 
@@ -920,7 +922,8 @@ class Library:
             return False
         elif external_path:
             logging.debug('Found external symtab for %s at %s', self.fullname,
-                          external_path)
+                          os.path.abspath(external_path))
+            self.external_debug_file = os.path.abspath(external_path)
 
         sorted_ranges = sorted(self.ranges.items())
         for _, symbol in self._get_function_symbols(symtab, prefix_local=True):
diff --git a/librarytrader/librarystore.py b/librarytrader/librarystore.py
index 95bb2496d29e049110f5f1dbe015bbfb27c0b575..f02805dca8b2c8d6252de91bfc7bf32a7387c402 100644
--- a/librarytrader/librarystore.py
+++ b/librarytrader/librarystore.py
@@ -795,6 +795,7 @@ class LibraryStore(BaseStore):
                 lib_dict["version_descriptions"] = content.version_descriptions
                 lib_dict["parse_time"] = content.parse_time
                 lib_dict["total_disas_time"] = content.total_disas_time
+                lib_dict["external_debug_file"] = content.external_debug_file
 
             output[path] = lib_dict
 
@@ -872,6 +873,7 @@ class LibraryStore(BaseStore):
                     library.version_descriptions = content.get("version_descriptions", {})
                     library.parse_time = float(content.get("parse_time", 0))
                     library.total_disas_time = float(content.get("total_disas_time", 0))
+                    library.external_debug_file = content.get("external_debug_file", None)
                     self._add_library(path, library)
 
         logging.debug('... done with %s entries', len(self))