diff --git a/sys/dev/syscons/syscons.c b/sys/dev/syscons/syscons.c
index 87540dc9a3c..33d0b553721 100644
--- a/sys/dev/syscons/syscons.c
+++ b/sys/dev/syscons/syscons.c
@@ -287,7 +287,7 @@ int pcprobe(struct isa_device *dev)
 		}
 	}
 	kbd_wait();
-	return 1;
+	return (IO_KBDSIZE);
 }
 
 
diff --git a/sys/i386/isa/syscons.c b/sys/i386/isa/syscons.c
index 87540dc9a3c..33d0b553721 100644
--- a/sys/i386/isa/syscons.c
+++ b/sys/i386/isa/syscons.c
@@ -287,7 +287,7 @@ int pcprobe(struct isa_device *dev)
 		}
 	}
 	kbd_wait();
-	return 1;
+	return (IO_KBDSIZE);
 }
 
 
diff --git a/sys/isa/syscons.c b/sys/isa/syscons.c
index 87540dc9a3c..33d0b553721 100644
--- a/sys/isa/syscons.c
+++ b/sys/isa/syscons.c
@@ -287,7 +287,7 @@ int pcprobe(struct isa_device *dev)
 		}
 	}
 	kbd_wait();
-	return 1;
+	return (IO_KBDSIZE);
 }