diff --git a/openbox.spec b/openbox.spec
index 76c38c6..8d6544f 100644
--- a/openbox.spec
+++ b/openbox.spec
@@ -29,6 +29,8 @@ BuildRequires:	libXt-devel
 BuildRequires:	libXrandr-devel
 BuildRequires:	libXinerama-devel
 BuildRequires:	imlib2-devel
+# workaround for yum to install correct libpng-devel
+BuildRequires:	libpng-devel
 Provides:	firstboot(windowmanager)
 
 %description