diff --git a/module1.ipynb b/module1.ipynb
index 07ca049..7665d18 100644
--- a/module1.ipynb
+++ b/module1.ipynb
@@ -288,7 +288,7 @@
     "You can follow along in the reading as the instructor discusses the code or review the code after watching the video.\n",
     "\n",
     "\n",
-    "```\n",
+    "```bash\n",
     "cp disk\\_usage.py disk\\_usage\\_original.py \n",
     "\n",
     "cp disk\\_usage.py disk\\_usage\\_fixed.py \n",
@@ -297,7 +297,7 @@
     "\n",
     "## **File with code**\n",
     "\n",
-    "```\n",
+    "```bash\n",
     "#!/usr/bin/env python3\n",
     "\n",
     "import shutil\n",
@@ -353,7 +353,7 @@
     "## File with code\n",
     "\n",
     "The instructor adds import sys at the beginning, then change return 1 to sys.exit(1) and return 0 to sys.exit(0).\n",
-    "```\n",
+    "```bash\n",
     "#!/usr/bin/env python3\n",
     "\n",
     "import shutil\n",
@@ -403,7 +403,7 @@
     "## File with code\n",
     "\n",
     "Instructor changed change check\\_disk\\_usage(\"/\", 2\\*2\\*\\*30, 10) in previous file to check\\_disk\\_usage(\"/\", 2, 10).\n",
-    "```\n",
+    "```bash\n",
     "#!/usr/bin/env python3\n",
     "\n",
     "import shutil\n",
@@ -450,11 +450,11 @@
     "\n",
     "Everything ok\n",
     "\n",
+    "```bash\n",
     "diff \\-u disk\\_usage\\_original.py disk\\_usage\\_fixed.py > disk\\_usage.diff\n",
     "\n",
     "cat disk\\_usage.diff \n",
-    "\n",
-    "\n",
+    "```\n",
     "\n",
     "**Code output:**\n",
     "\n",
@@ -496,7 +496,7 @@
     "\n",
     "+sys.exit(0)\n",
     "\n",
-    "```\n",
+    "```bash\n",
     "patch disk\\_usage.py < disk\\_usage.diff \n",
     "\n",
     "patching file disk\\_usage.py\n",
@@ -505,9 +505,9 @@
     "**Code output:**\n",
     "\n",
     "patching file disk\\_usage.py\n",
-    "\n",
+    "```bash\n",
     "./disk\\_usage.py \n",
-    "\n",
+    "```\n",
     "\n",
     "\n",
     "**Code output:**\n",