diff --git a/document.c b/document.c
index 997d045..6ffe7f7 100644
--- a/document.c
+++ b/document.c
@@ -390,11 +390,11 @@ zathura_document_set_rotation(zathura_document_t* document, unsigned int rotatio
 
   document->rotate = rotation % 360;
 
-  if (document->rotate > 0 && document->rotate < 90) {
+  if (document->rotate > 0 && document->rotate <= 90) {
     document->rotate = 90;
-  } else if (document->rotate > 0 && document->rotate < 180) {
+  } else if (document->rotate > 0 && document->rotate <= 180) {
     document->rotate = 180;
-  } else if (document->rotate > 0 && document->rotate < 270) {
+  } else if (document->rotate > 0 && document->rotate <= 270) {
     document->rotate = 270;
   } else {
     document->rotate = 0;