2 files changed, 5 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index f07c32b..d9c25dc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CC ?= gcc
 CFLAGS := -Wall -O2 -std=c99
 LDFLAGS :=
-LDLIBS :=
+LDLIBS := -lm
 
 SRCDIR := src
 BINDIR := bin
diff --git a/src/main.c b/src/main.c
index 50beaaa..3f94e3b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <math.h>
 
 #include <sys/syslog.h>
 #include <syslog.h>
@@ -25,17 +26,17 @@ int main(int argc, char **argv) {
 	for (int i = 1; i < argc; i++) {
 		char *tmp = NULL;
 
-		if ((tmp = malloc(strlen(argv[i]) + 4)) == NULL) {
+        if ((tmp = malloc(strlen(argv[i]) + sizeof(char) * (int)log10(i)))
+            == NULL) {
 			perror("main: malloc failed");
 			exit(EXIT_FAILURE);
 		}
 
-		sprintf(tmp, "[%d] %s ", i, argv[i]);
+		sprintf(tmp, " [%d] %s", i, argv[i]);
 		strcat(str, tmp);
 
 		free(tmp);
 	}
-	str[strlen(str)] = '\0';
 
     syslog(LOG_DEBUG, "args: %s\n", str);