diff --git a/packages/cboard/build.sh b/packages/cboard/build.sh
index 18ecc7715..b92c63b6a 100644
--- a/packages/cboard/build.sh
+++ b/packages/cboard/build.sh
@@ -12,7 +12,7 @@ termux_step_pre_configure() {
 	CFLAGS+=" -DLINE_MAX=_POSIX2_LINE_MAX"
 	LDFLAGS+=" -landroid-glob"
 
-	if $TERMUX_DEBUG; then
+	if $TERMUX_DEBUG_BUILD; then
 		# When doing debug build, -D_FORTIFY_SOURCE=2 gives this error:
 		# /home/builder/.termux-build/cboard/src/libchess/pgn.c:2235:33: error: 'umask' called with invalid mode
 		# mode = umask(600);