diff --git a/sbin/fsck/main.c b/sbin/fsck/main.c
index f2dba1c83993..5ff6918a131e 100644
--- a/sbin/fsck/main.c
+++ b/sbin/fsck/main.c
@@ -285,8 +285,7 @@ checkfilesys(filesys, mntpt, auxdata, child)
 	duplist = (struct dups *)0;
 	muldup = (struct dups *)0;
 	inocleanup();
-	if (fsmodified || (!sblock.fs_clean && preen && !nflag && !hotroot)) {
-		sblock.fs_clean = 1;
+	if (fsmodified) {
 		(void)time(&sblock.fs_time);
 		sbdirty();
 	}
diff --git a/sbin/fsck/pass5.c b/sbin/fsck/pass5.c
index 2e98f96b5ca8..84e4ba729d0f 100644
--- a/sbin/fsck/pass5.c
+++ b/sbin/fsck/pass5.c
@@ -316,4 +316,13 @@ pass5()
 		fs->fs_fmod = 0;
 		sbdirty();
 	}
+	if (fs->fs_clean == 0) {
+		pwarn("CLEAN FLAG IS WRONG IN SUPERBLOCK");
+		if (preen)
+			printf(" (FIXED)\n");
+		if (preen || reply("FIX") == 1) {
+			fs->fs_clean = 1;
+			sbdirty();
+		}
+	}
 }
diff --git a/sbin/fsck_ffs/main.c b/sbin/fsck_ffs/main.c
index f2dba1c83993..5ff6918a131e 100644
--- a/sbin/fsck_ffs/main.c
+++ b/sbin/fsck_ffs/main.c
@@ -285,8 +285,7 @@ checkfilesys(filesys, mntpt, auxdata, child)
 	duplist = (struct dups *)0;
 	muldup = (struct dups *)0;
 	inocleanup();
-	if (fsmodified || (!sblock.fs_clean && preen && !nflag && !hotroot)) {
-		sblock.fs_clean = 1;
+	if (fsmodified) {
 		(void)time(&sblock.fs_time);
 		sbdirty();
 	}
diff --git a/sbin/fsck_ffs/pass5.c b/sbin/fsck_ffs/pass5.c
index 2e98f96b5ca8..84e4ba729d0f 100644
--- a/sbin/fsck_ffs/pass5.c
+++ b/sbin/fsck_ffs/pass5.c
@@ -316,4 +316,13 @@ pass5()
 		fs->fs_fmod = 0;
 		sbdirty();
 	}
+	if (fs->fs_clean == 0) {
+		pwarn("CLEAN FLAG IS WRONG IN SUPERBLOCK");
+		if (preen)
+			printf(" (FIXED)\n");
+		if (preen || reply("FIX") == 1) {
+			fs->fs_clean = 1;
+			sbdirty();
+		}
+	}
 }
diff --git a/sbin/fsck_ifs/main.c b/sbin/fsck_ifs/main.c
index f2dba1c83993..5ff6918a131e 100644
--- a/sbin/fsck_ifs/main.c
+++ b/sbin/fsck_ifs/main.c
@@ -285,8 +285,7 @@ checkfilesys(filesys, mntpt, auxdata, child)
 	duplist = (struct dups *)0;
 	muldup = (struct dups *)0;
 	inocleanup();
-	if (fsmodified || (!sblock.fs_clean && preen && !nflag && !hotroot)) {
-		sblock.fs_clean = 1;
+	if (fsmodified) {
 		(void)time(&sblock.fs_time);
 		sbdirty();
 	}
diff --git a/sbin/fsck_ifs/pass5.c b/sbin/fsck_ifs/pass5.c
index 2e98f96b5ca8..84e4ba729d0f 100644
--- a/sbin/fsck_ifs/pass5.c
+++ b/sbin/fsck_ifs/pass5.c
@@ -316,4 +316,13 @@ pass5()
 		fs->fs_fmod = 0;
 		sbdirty();
 	}
+	if (fs->fs_clean == 0) {
+		pwarn("CLEAN FLAG IS WRONG IN SUPERBLOCK");
+		if (preen)
+			printf(" (FIXED)\n");
+		if (preen || reply("FIX") == 1) {
+			fs->fs_clean = 1;
+			sbdirty();
+		}
+	}
 }