diff --git a/jna.spec b/jna.spec
index 7932c88..eb80a7c 100644
--- a/jna.spec
+++ b/jna.spec
@@ -38,6 +38,7 @@ BuildRequires:  junit
 BuildRequires:  libffi-devel
 BuildRequires:  xorg-x11-libX11-devel
 BuildRequires:  xorg-x11-libXt-devel
+BuildConflicts: java-devel >= 9
 Requires:       java >= 1.8
 Provides:       jna-native = %{version}-%{release}
 Obsoletes:      jna-native < %{version}-%{release}