diff --git a/package/zynaddsubfx/zynaddsubfx.mk b/package/zynaddsubfx/zynaddsubfx.mk
index 158b5b4ede..c8d64f5ce8 100644
--- a/package/zynaddsubfx/zynaddsubfx.mk
+++ b/package/zynaddsubfx/zynaddsubfx.mk
@@ -11,7 +11,7 @@ ZYNADDSUBFX_LICENSE = GPL-2.0+
 ZYNADDSUBFX_LICENSE_FILES = COPYING
 
 # There is no package in buildroot using LV2 plugins: disabling
-ZYNADDSUBFX_CONF_OPTS = -DPluginEnable=False
+ZYNADDSUBFX_CONF_OPTS = -DPluginEnable=OFF
 
 ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
 ZYNADDSUBFX_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-latomic