diff --git a/gc.spec b/gc.spec
index 1cdb4fb..b8a37ef 100644
--- a/gc.spec
+++ b/gc.spec
@@ -19,6 +19,7 @@ Patch100: gc-7.1-dont_add_byte.patch
 
 BuildRequires: automake libtool 
 BuildRequires: libatomic_ops-devel
+BuildRequires: pkgconfig
 
 # rpmforge compatibility
 Obsoletes: libgc < %{version}-%{release}