diff --git a/tester/log_collection_tester.c b/tester/log_collection_tester.c
index 4f58223d3..0c2f30c3a 100644
--- a/tester/log_collection_tester.c
+++ b/tester/log_collection_tester.c
@@ -32,7 +32,7 @@
 /*getline is POSIX 2008, not available on many systems.*/
 #if defined(ANDROID) || defined(_WIN32) || defined(__QNX__)
 /* This code is public domain -- Will Hartung 4/9/09 */
-static size_t getline(char **lineptr, size_t *n, FILE *stream) {
+static ssize_t getline(char **lineptr, size_t *n, FILE *stream) {
 	char *bufptr = NULL;
 	char *p = bufptr;
 	size_t size;