diff --git a/src/compat.h b/src/compat.h
index fbd1073..56b414e 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -31,6 +31,8 @@
 #define SYSKLOGD_COMPAT_H_
 
 #include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
 
 /*
  * The following macro is used to remove const cast-away warnings
@@ -69,4 +71,33 @@ static inline char *getprogname(void)
 	return __progname;
 }
 
+static inline int strtobytes(char *arg)
+{
+	int mod = 0, bytes;
+	size_t pos;
+
+	if (!arg)
+		return -1;
+
+	pos = strspn(arg, "0123456789");
+	if (arg[pos] != 0) {
+		if (arg[pos] == 'G')
+			mod = 3;
+		else if (arg[pos] == 'M')
+			mod = 2;
+		else if (arg[pos] == 'k')
+			mod = 1;
+		else
+			return -1;
+
+		arg[pos] = 0;
+	}
+
+	bytes = atoi(arg);
+	while (mod--)
+		bytes *= 1000;
+
+	return bytes;
+}
+
 #endif /* SYSKLOGD_COMPAT_H_ */
diff --git a/src/syslogd.c b/src/syslogd.c
index 2a2718c..d7ff37e 100644
--- a/src/syslogd.c
+++ b/src/syslogd.c
@@ -569,6 +569,7 @@ static char sccsid[] __attribute__((unused)) =
 #endif
 #include "config.h"
 #include <paths.h>
+#include "compat.h"
 
 /*
  * Linux uses EIO instead of EBADFD (mrn 12 May 96)
@@ -2713,35 +2714,6 @@ void init(void)
 	logit("syslogd: restarted.\n");
 }
 
-static int strtobytes(char *arg)
-{
-	int mod = 0, bytes;
-	size_t pos;
-
-	if (!arg)
-		return -1;
-
-	pos = strspn(arg, "0123456789");
-	if (arg[pos] != 0) {
-		if (arg[pos] == 'G')
-			mod = 3;
-		else if (arg[pos] == 'M')
-			mod = 2;
-		else if (arg[pos] == 'k')
-			mod = 1;
-		else
-			return -1;
-
-		arg[pos] = 0;
-	}
-
-	bytes = atoi(arg);
-	while (mod--)
-		bytes *= 1000;
-
-	return bytes;
-}
-
 /*
  * Crack a configuration file line
  */