diff --git a/ppm.c b/ppm.c
index dff7ad564645c5e6a620e42ee8e325842d930559..b607c77a3af7fe1b392d3c0b54ab209a8aed9dce 100644
--- a/ppm.c
+++ b/ppm.c
@@ -65,20 +65,23 @@ 						} break;
 
 					case 1:
 						{
-							if (isdigit(c))
+							if (isdigit(c)) {
 								img.width = img.width * 10 + (c - '0');
+							}
 						} break;
 
 					case 2:
 						{
-							if (isdigit(c))
+							if (isdigit(c)) {
 								img.height = img.height * 10 + (c - '0');
+							}
 						} break;
 
 					case 3:
 						{
-							if (isdigit(c))
+							if (isdigit(c)) {
 								img.color_space = img.color_space * 10 + (c - '0');
+							}
 						} break;
 				}
 			} else {