diff --git a/openexr.spec b/openexr.spec
index 94875c9..40f2e53 100644
--- a/openexr.spec
+++ b/openexr.spec
@@ -35,7 +35,7 @@ BuildRequires:  fltk-devel
 BuildRequires:  freeglut-devel
 BuildRequires:  gcc-c++
 BuildRequires:  pkgconfig
-BuildRequires:  pkgconfig(IlmBase) >= 2.3.0
+BuildRequires:  pkgconfig(IlmBase) >= %{version}
 BuildRequires:  pkgconfig(zlib)
 Obsoletes:      OpenEXR <= 1.6.1
 Provides:       OpenEXR = %{version}