diff --git a/libr/main/rasm2.c b/libr/main/rasm2.c
index 67c35fa381..a929426737 100644
--- a/libr/main/rasm2.c
+++ b/libr/main/rasm2.c
@@ -344,6 +344,7 @@ static int rasm_show_help(int v) {
 			" -LLL         list RArch plugins (see arch.arch=?) combines with -j\n"
 			" -o,-@ [addr] set start address for code (default 0)\n"
 			" -O [file]    output file name (rasm2 -Bf a.asm -O a)\n"
+			" -N           same as r2 -N (or RASM2_NOPLUGINS) (not load any plugin)\n"
 			" -p           run SPP over input for assembly\n"
 			" -q           quiet mode\n"
 			" -r           output in radare commands\n"
diff --git a/man/rasm2.1 b/man/rasm2.1
index 038e527ecd..8ebf5df757 100644
--- a/man/rasm2.1
+++ b/man/rasm2.1
@@ -1,11 +1,11 @@
-.Dd Jul 25, 2021
+.Dd Mar 27, 2023
 .Dt RASM2 1
 .Sh NAME
 .Nm rasm2
 .Nd radare2 assembler and disassembler tool
 .Sh SYNOPSIS
 .Nm rasm2
-.Op Fl ABdDeEfCLvwrqx
+.Op Fl ABdDeEfCLvwrNqx
 .Op Fl a Ar arch
 .Op Fl b Ar bits
 .Op Fl c Ar cpu
@@ -63,6 +63,8 @@ List loaded arch plugins
 Offset of the opcode to assemble (default is 0)
 .It Fl @ Ar offset
 Alias for -o
+.It Fl N
+Dont load any plugin, same as RASM2_NOPLUGINS=1 or r2 -NN
 .It Fl O Ar ofile
 output to file, for example 'rasm2 \-BF a a.asm'
 .It Fl r