diff --git a/fs/erofs/Kconfig b/fs/erofs/Kconfig
index 2dfc313588d2..37495e95a78d 100644
--- a/fs/erofs/Kconfig
+++ b/fs/erofs/Kconfig
@@ -132,11 +132,13 @@ config EROFS_FS_ZIP_LZMA
 	  Say N if you want to disable LZMA compression support.
 
 config EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS
-	int "EROFS LZMA default maximum decompression streams"
+	int "EROFS LZMA default maximum decompression streams" if SMP
 	depends on EROFS_FS_ZIP_LZMA
 	range 1 NR_CPUS if SMP
 	range 1 1 if !SMP
-	default 16
+	default 16 if SMP && NR_CPUS >= 16
+	default NR_CPUS if SMP
+	default 1
 	help
 	  By default EROFS allocates one LZMA decompression stream per CPU.
 	  Each stream can hold a dictionary of up to 8 MiB taken from the
@@ -144,7 +146,7 @@ config EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS
 	  of memory.  This caps the default; the lzma_streams module parameter
 	  still overrides it.
 
-	  If unsure, keep the default of 16.
+	  If unsure, keep the suggested default (16 or lower).
 
 config EROFS_FS_ZIP_DEFLATE
 	bool "EROFS DEFLATE compressed data support"