diff --git a/Userland/Libraries/LibC/sys/ioctl_numbers.h b/Userland/Libraries/LibC/sys/ioctl_numbers.h
index ca715672c5..257def59b8 100644
--- a/Userland/Libraries/LibC/sys/ioctl_numbers.h
+++ b/Userland/Libraries/LibC/sys/ioctl_numbers.h
@@ -19,10 +19,10 @@ struct winsize {
 };
 
 struct FBProperties {
-    bool multihead_support;
-    bool doublebuffer_support;
-    bool flushing_support;
-    bool partial_flushing_support;
+    unsigned char multihead_support;
+    unsigned char doublebuffer_support;
+    unsigned char flushing_support;
+    unsigned char partial_flushing_support;
 };
 
 struct FBHeadProperties {