Ah, right, yes.

src/nyancat.c

@@ -443,14 +443,14 @@ int main(int argc, char ** argv) {
 							if (sb[0] == TTYPE) {
 								/* This was a response to the TTYPE command, meaning
 								 * that this should be a terminal type */
-								alarm(0);
+								alarm(2);
 								strcpy(term, &sb[2]);
 								done++;
 							}
 							else if (sb[0] == NAWS) {
 								/* This was a response to the NAWS command, meaning
 								 * that this should be a window size */
-								alarm(0);
+								alarm(2);
 								terminal_width = sb[2];
 								done++;
 							}
@@ -521,6 +521,7 @@ int main(int argc, char ** argv) {
 				}
 			}
 		}
+		alarm(0);
 	} else {
 		/* We are running standalone, retrieve the
 		 * terminal type from the environment. */