diff --git a/src/cat.c b/src/cat.c
index 990f69d..582ed57 100644
--- a/src/cat.c
+++ b/src/cat.c
@@ -12,7 +12,7 @@ void cat(const int fd) {
 
 	while ((len = read(fd, buf, sizeof(buf))) > 0) {
 		for (ssize_t i = 0; i < len; i++) {
-			if ((i > 0) ? buf[i - 1] == '\n' : 1 && flag)
+			if (((i > 0) ? buf[i - 1] == '\n' : 1) && flag)
 				printf(" %d ", ++lines);
 
 			printf("%c", buf[i]);
@@ -30,7 +30,7 @@ int main(const int argc, const char **argv) {
 			flag = 1;
 
 		else if (!strcmp(argv[i], "-h")) {
-			printf("cat [-n] [file1 file2 ...]\n");
+			printf("cat [-n (numerate)] [file1 file2 ...]\n");
 			return 1;
 		}
 	}
diff --git a/src/ls.c b/src/ls.c
index 4b78cb9..0a7eb4b 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -55,7 +55,7 @@ int main(const int argc, const char **argv) {
 			flag = 1;
 
 		else if (!strcmp(argv[i], "-h")) {
-			printf("ls [-a] [Path]\n");
+			printf("ls [-a (Show hidden files)] [Path]\n");
 			return 0;
 		}
 	}
diff --git a/src/uname.c b/src/uname.c
index 69e19e7..060f24a 100644
--- a/src/uname.c
+++ b/src/uname.c
@@ -36,7 +36,7 @@ int main(const int argc, const char **argv) {
 			flags[O_MACHINE] = 1;
 
 		else if (!strcmp("-h", argv[i])) {
-			printf("uname [-a] [-s] [-n] [-r] [-v] [-m]\n");
+			printf("uname [-a (All)] [-s (Sys)] [-n (Nodename)] [-r (Release)] [-v (Version)] [-m (Machine)]\n");
 			return 0;
 		}
 	}