diff --git a/krita.spec b/krita.spec
index 0677961..fe824bc 100644
--- a/krita.spec
+++ b/krita.spec
@@ -101,6 +101,10 @@ Requires:       %{name} = %{version}-%{release}
 
 
 %build
+%ifarch ppc64 ppc64le
+%global optflags_orig %optflags
+%global optflags %optflags_orig -DEIGEN_ALTIVEC_DISABLE_MMA
+%endif
 %cmake_kf5
 
 %cmake_build