diff --git a/find_duplicate_files/find_duplicate_files.py b/find_duplicate_files/find_duplicate_files.py
index 27b8254..4613da2 100644
--- a/find_duplicate_files/find_duplicate_files.py
+++ b/find_duplicate_files/find_duplicate_files.py
@@ -64,7 +64,7 @@ class find_duplicate_files:
         try:
             result = self.cur.execute(query)
         except Exception as error:
-            self._log.error("Error executing query '{query}'. {error}")
+            self._log.error(f"Error executing query '{query}'. {error}")
             sys.exit(2)
         row = result.fetchone()
         if row and len(row) > 0:
@@ -78,7 +78,7 @@ class find_duplicate_files:
         try:
             result = self.cur.execute(query)
         except Exception as error:
-            self._log.error("Error executing query '{query}'. {error}")
+            self._log.error(f"Error executing query '{query}'. {error}")
             sys.exit(3)
         self.cache_db.commit()
         return result