diff --git a/src/detection/terminalfont/terminalfont_linux.c b/src/detection/terminalfont/terminalfont_linux.c
index 28128ad3f..54ea3a328 100644
--- a/src/detection/terminalfont/terminalfont_linux.c
+++ b/src/detection/terminalfont/terminalfont_linux.c
@@ -173,6 +173,7 @@ static void detectDeepinTerminal(const FFinstance* instance, FFTerminalFontResul
             }
         }
 
+        free(line);
         fclose(file);
     }