diff --git a/src/cd_check_capabilities.c b/src/cd_check_capabilities.c
index 77a7f9d..8645a62 100644
--- a/src/cd_check_capabilities.c
+++ b/src/cd_check_capabilities.c
@@ -13,12 +13,21 @@ static inline void die(int code, const char* message, int fd){
     exit(code);
 }
 
+static inline void print_usage(){
+    printf("Usage: %s [-h]\n\t-h\tdisplays this help message.\n\t\
+            Calling the program with no arguments will check the CD \
+            tray and its' capabilities.", program_name);
+    die(127);
+}
+
 int main(int argc, char** argv){
     register int fd, caps;
 
     if(!argv) die(127, "How did you do that? No argv?", -1);
     program_name = argv[0];
 
+    if(argc > 1) print_usage();
+
     if((fd = open("/dev/cdrom", O_RDONLY | O_NONBLOCK)) == -1)
         die(127, "Cannot open /dev/cdrom", fd);
 
diff --git a/src/cd_check_eject.c b/src/cd_check_eject.c
index 03539dd..1e12491 100644
--- a/src/cd_check_eject.c
+++ b/src/cd_check_eject.c
@@ -13,12 +13,21 @@ static inline void die(int code, const char* message, int fd){
     exit(code);
 }
 
+static inline void print_usage(){
+    printf("Usage: %s [-h]\n\t-h\tdisplays this help message.\n\t\
+            Calling the program with no arguments will open the CD \
+            tray.", program_name);
+    die(127);
+}
+
 int main(int argc, char** argv){
     register int fd;
 
     if(!argv) die(127, "How did you do that? No argv?", -1);
     program_name = argv[0];
 
+    if(argc > 1) print_usage();
+
     if((fd = open("/dev/cdrom", O_RDONLY | O_NONBLOCK)) == -1)
         die(127, "Cannot open /dev/cdrom", fd);
 
diff --git a/src/cd_check_read.c b/src/cd_check_read.c
index 66e54ce..8e481ba 100644
--- a/src/cd_check_read.c
+++ b/src/cd_check_read.c
@@ -14,6 +14,13 @@ static inline void die(int code, const char* message, int fd){
     exit(code);
 }
 
+static inline void print_usage(){
+    printf("Usage: %s [-h]\n\t-h\tdisplays this help message.\n\t\
+            Calling the program with no arguments will read the \
+            CD lying in the tray and play it.", program_name);
+    die(127);
+}
+
 int main(int argc, char** argv){
     register int fd;
     struct cdrom_tocentry toc_entry;
@@ -22,6 +29,8 @@ int main(int argc, char** argv){
     if(!argv) die(127, "How did you do that? No argv?", -1);
     program_name = argv[0];
 
+    if(argc > 1) print_usage();
+
     if((fd = open("/dev/cdrom", O_RDONLY)) == -1){
         if(errno == ENOMEDIUM)
             die(127, "No CD in drive", fd);
diff --git a/src/cd_check_read_toc.c b/src/cd_check_read_toc.c
index 2e04d60..8ebc33c 100644
--- a/src/cd_check_read_toc.c
+++ b/src/cd_check_read_toc.c
@@ -14,6 +14,13 @@ static inline void die(int code, const char* message, int fd){
     exit(code);
 }
 
+static inline void print_usage(){
+    printf("Usage: %s [-h]\n\t-h\tdisplays this help message.\n\t\
+            Calling the program with no arguments will read the \
+            table of contents of the CD lying in the tray.", program_name);
+    die(127);
+}
+
 int main(int argc, char** argv){
     register int fd;
     register unsigned char i;
@@ -23,6 +30,8 @@ int main(int argc, char** argv){
     if(!argv) die(127, "How did you do that? No argv?", -1);
     program_name = argv[0];
 
+    if(argc > 1) print_usage();
+
     if((fd = open("/dev/cdrom", O_RDONLY)) == -1){
         if(errno == ENOMEDIUM)
             die(127, "No CD in drive", fd);