2 files changed, 5 insertions, 1 deletions
diff --git a/Readme.md b/Readme.md
index 5948bd1..c003495 100644
--- a/Readme.md
+++ b/Readme.md
@@ -186,3 +186,7 @@ note
 
 this program requires a POSIX environment. it also makes use of the `timegm`
 function, which is a non-standard extension but commonly implemented.
+
+because of how `time.h` defines `struct tm`, and of how active events are
+calculated, every will not work correctly on architectures where `int` is
+smaller than 32 bits
diff --git a/src/main.c b/src/main.c
index 21a1f49..e10b7a7 100644
--- a/src/main.c
+++ b/src/main.c
@@ -27,7 +27,7 @@ int main(int argc, char **argv)
 	char **rdirs, **cur;
 	bool calpath_alloced = false;
 
-	if (INT_MAX < 2147483647) {
+	if ((unsigned long)INT_MAX < (unsigned long)2147483647) {
 		ERR(
 			"%s does not work appropriately on systems where `int` < 32 bits",
 			argv[0]