diff --git a/community/gmic/PKGBUILD b/community/gmic/PKGBUILD
index 6bd5e72d1..7db6e252b 100644
--- a/community/gmic/PKGBUILD
+++ b/community/gmic/PKGBUILD
@@ -14,7 +14,7 @@ highmem=1
 pkgbase=gmic
 pkgname=(gmic zart gimp-plugin-gmic krita-plugin-gmic)
 pkgver=2.9.0
-pkgrel=2
+pkgrel=3
 arch=(x86_64)
 url="https://gmic.eu/"
 license=(custom:CeCILL)
@@ -51,7 +51,7 @@ build() {
   make  
 
   cd ../zart
-  export CFLAGS=${CFLAGS/-O2/} # https://github.com/c-koi/zart/issues/14
+  export CXXFLAGS=${CXXFLAGS/-O2/} # https://github.com/c-koi/zart/issues/14
   qmake GMIC_PATH=../src GMIC_DYNAMIC_LINKING=on QMAKE_CXXFLAGS+=" -DOPENCV2_HEADERS"
   make
 }