diff --git a/03_classification.ipynb b/03_classification.ipynb
index ff127c8..160d972 100644
--- a/03_classification.ipynb
+++ b/03_classification.ipynb
@@ -74,6 +74,7 @@
     "\n",
     "# 한글출력\n",
     "matplotlib.rc('font', family='NanumBarunGothic')\n",
+    "plt.rcParams['axes.unicode_minus'] = False\n",
     "\n",
     "# 그림을 저장할 폴드\n",
     "PROJECT_ROOT_DIR = \".\"\n",