diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c
index c2253b6a5416..eb318c7ddd80 100644
--- a/fs/erofs/decompressor.c
+++ b/fs/erofs/decompressor.c
@@ -539,7 +539,7 @@ int __init z_erofs_init_decompressor(void)
 	for (i = 0; i < Z_EROFS_COMPRESSION_MAX; ++i) {
 		err = z_erofs_decomp[i] ? z_erofs_decomp[i]->init() : 0;
 		if (err) {
-			while (--i)
+			while (i--)
 				if (z_erofs_decomp[i])
 					z_erofs_decomp[i]->exit();
 			return err;