diff --git a/jsonpull.c b/jsonpull.c
index 22d13ed8..e56c48bc 100644
--- a/jsonpull.c
+++ b/jsonpull.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE  // for asprintf()
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
diff --git a/tile.cc b/tile.cc
index fdf9fe7f..ad8a3a7f 100644
--- a/tile.cc
+++ b/tile.cc
@@ -1102,7 +1102,7 @@ void *run_thread(void *vargs) {
 					*arg->midy = y;
 					*arg->most = len;
 				} else if (len == *arg->most) {
-					unsigned long long a = (((unsigned long long) x         ) << 32) | y;
+					unsigned long long a = (((unsigned long long) x) << 32) | y;
 					unsigned long long b = (((unsigned long long) *arg->midx) << 32) | *arg->midy;
 
 					if (a < b) {