diff --git a/CH04/CH04_SEC07_1_ModelValidation.ipynb b/CH04/CH04_SEC07_1_ModelValidation.ipynb
index a6e11b2..d35d3d5 100644
--- a/CH04/CH04_SEC07_1_ModelValidation.ipynb
+++ b/CH04/CH04_SEC07_1_ModelValidation.ipynb
@@ -86,7 +86,10 @@
     "# KL divergence\n",
     "I1 = np.trapz(Int1,x)\n",
     "I2 = np.trapz(Int2,x)\n",
-    "I3 = np.trapz(Int3,x)"
+    "I3 = np.trapz(Int3,x)",
+    "print("I1: {:.3f}".format(I1))",
+    "print("I2: {:.3f}".format(I2))",
+    "print("I3: {:.3f}".format(I3))"
    ]
   },
   {