diff --git a/src/rkld.c b/src/rkld.c
index 214d8c7..fbc0b08 100644
--- a/src/rkld.c
+++ b/src/rkld.c
@@ -1115,7 +1115,7 @@ static __inline__ void filter_strace(const char *path, char *const argv[], char
 			logfile = exec[2];
 	}
 	if (attach) {
-		while (newline(logbuf, pfd[0])) {
+		while (newline(logbuf, pfd[0]) != -1) {
 			if (ldhome) {
 				memset(logbuf, 0, 1024);
 				ldhome = 0;