diff --git a/packages/iverilog/build.sh b/packages/iverilog/build.sh
index 2b3b5ccd0..080e6b103 100644
--- a/packages/iverilog/build.sh
+++ b/packages/iverilog/build.sh
@@ -1,15 +1,14 @@
 TERMUX_PKG_HOMEPAGE=http://iverilog.icarus.com/
 TERMUX_PKG_DESCRIPTION="Icarus Verilog compiler and simulation tool"
 TERMUX_PKG_LICENSE="GPL-2.0"
-TERMUX_PKG_VERSION=11.0
+TERMUX_PKG_VERSION=10.3
 TERMUX_PKG_SRCURL=https://github.com/steveicarus/iverilog/archive/v${TERMUX_PKG_VERSION/./_}.tar.gz
-TERMUX_PKG_SHA256=6327fb900e66b46803d928b7ca439409a0dc32731d82143b20387be0833f1c95
+TERMUX_PKG_SHA256=4b884261645a73b37467242d6ae69264fdde2e7c4c15b245d902531efaaeb234
 TERMUX_PKG_DEPENDS="libbz2, libc++, readline, zlib"
 TERMUX_PKG_BREAKS="iverilog-dev"
 TERMUX_PKG_REPLACES="iverilog-dev"
 
 termux_step_pre_configure() {
-	unset CFLAGS
 	LDFLAGS+=" -lm"
 	aclocal
 	autoconf