diff --git a/pscat/Makefile b/pscat/Makefile
index 0353c73..c9a0cb0 100644
--- a/pscat/Makefile
+++ b/pscat/Makefile
@@ -1,22 +1,13 @@
-CFLAGS = -g
-RM = rm -f
-TARGETS = pscat
+pscat: pscat.o psargs.o
+	$(CC) $(CFLAGS) -g -o pscat psargs.o pscat.o
 
-all: $(TARGETS)
+pscat.o: pscat.c
+	$(CC) $(CFLAGS) -c -o pscat.o pscat.c
+
+psargs.o: psargs.c
+	$(CC) $(CFLAGS) -c -o psargs.o psargs.c
 
 clean:
-	$(RM) $(TARGETS) *.o
+	rm -f *.o pscat
 
-debug:
-	$(CC) $(DEBUG) -o pscat pscat.c
-
-%.o: %.c %.h
-	$(CC) $(CFLAGS) -c -o %.o %.c
-
-pscat.o: psargs.h pscat.c
-	$(CC) $(CFLAGS) -DUSE_ASCII_H -DDONT_USE_SYSTEM_SYSEXITS -c -o pscat.o pscat.c
-
-pscat: pscat.o psargs.o
-	$(CC) $(CFLAGS) -o pscat psargs.o pscat.o
-
-.PHONY: all clean
+.PHONY: clean
diff --git a/pscat/pscat.c b/pscat/pscat.c
index f671a8a..6203e84 100644
--- a/pscat/pscat.c
+++ b/pscat/pscat.c
@@ -1,7 +1,8 @@
-#include <stdio.h>
-#include <sysexits.h>
-#include <unistd.h>
-#include <sys/wait.h>
+#include <stdio.h> /* fprintf(3), stderr */
+#include <sysexits.h> /* EX_USAGE */
+#include <unistd.h> /* execvp(3) */
+#include <sys/types.h> /* <sys/wait.h> */
+#include <sys/wait.h> /* wait(2) */
 
 #include "psargs.h"
 
@@ -31,7 +32,7 @@ forking(char **argv){
 
 int main(int argc, char *argv[]){
 
-	if((check_arg(++argv, L_PAREN, R_PAREN)) == 0){
+	if(check_arg(++argv, L_PAREN, R_PAREN) == 0){
 		fprintf(stderr,
 			"Usage: %s \"[\" [utility [argument...]] \"]\" ...\n",
 			argv[-1] == NULL ? program_name : argv[-1]