diff --git a/OpenColorIO.spec b/OpenColorIO.spec
index 3e3fcc4..b647f44 100644
--- a/OpenColorIO.spec
+++ b/OpenColorIO.spec
@@ -41,7 +41,7 @@ BuildRequires:  OpenEXR-devel
 # WARNING: OpenColorIO and OpenImageIO are cross dependent.
 # If an ABI incompatible update is done in one, the other also needs to be
 # rebuilt.
-#BuildRequires:  OpenImageIO-devel
+BuildRequires:  OpenImageIO-devel
 
 #######################
 # Unbundled libraries #