diff --git a/include/curl/curlbuild.h.dist b/include/curl/curlbuild.h.dist
index d0b32acbe..5737cc08d 100644
--- a/include/curl/curlbuild.h.dist
+++ b/include/curl/curlbuild.h.dist
@@ -527,7 +527,7 @@
 /* ===================================== */
 
 #elif defined(__GNUC__)
-#  if defined(__i386__) || defined(__ppc__)
+#  if defined(__i386__) || defined(__ppc__) || defined(__arm__)
 #    define CURL_SIZEOF_LONG           4
 #    define CURL_TYPEOF_CURL_OFF_T     long long
 #    define CURL_FORMAT_CURL_OFF_T     "lld"