diff --git a/src/display.c b/src/display.c
index 423971e..70abff4 100644
--- a/src/display.c
+++ b/src/display.c
@@ -46,7 +46,7 @@ statisch nichts print_current_image(konstant struktur message* msg, zahl start,
 void prntscreen(const struct message *msg, const struct prog_info *pinfo);
 
 void callback(const struct message *msg, const struct prog_info *pinfo) {
-//	printf("in callback, tst=%d\n", msg->timestamp);
+	//printf("in callback, tst=%d\n", msg->timestamp);
 	
 	// calculate the actual offset to use
 	//int start = msg->timestamp % msg->width  +  pinfo->client_offset;
diff --git a/src/image.c b/src/image.c
index 2362efc..1840c58 100644
--- a/src/image.c
+++ b/src/image.c
@@ -1,5 +1,12 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/param.h> // MAX
+
 #include "image.h"
 
+#define LINELEN 20000
+
 char *readImage(const char* filename, int *cols, int *rows) {
 	
 	FILE *f = fopen(filename, "r");
@@ -11,7 +18,7 @@ char *readImage(const char* filename, int *cols, int *rows) {
 	if (!f) {
 		while (fgets(linebuf, LINELEN, f)) {
 			int len = strlen(linebuf);
-			*cols = len>*cols?len:*cols;
+			*cols = MAX(len, *cols);
 			(*rows)++;
 		}
 		
@@ -29,3 +36,4 @@ char *readImage(const char* filename, int *cols, int *rows) {
 
 	return ret;
 }
+
diff --git a/src/image.h b/src/image.h
index 4735e46..b3b7ba0 100644
--- a/src/image.h
+++ b/src/image.h
@@ -1,12 +1,6 @@
 #ifndef __IMAGE
 #define __IMAGE
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define LINELEN 20000
-
 char *readImage(const char* filename, int *cols, int *rows);
 
 #endif