diff --git a/zn_poly.spec b/zn_poly.spec
index a47db6c..7f71504 100644
--- a/zn_poly.spec
+++ b/zn_poly.spec
@@ -3,7 +3,6 @@ Version:        0.9.1
 Release:        1%{?dist}
 Summary:        C library for polynomial arithmetic
 
-Group:          Development/Libraries
 # All files released under "GPLv2 or GPLv3", except:
 # - include/wide_arith.h is part LGPLv2+ and part GPLv2+
 # - include/profiler.h is part GPLv2+
@@ -24,7 +23,6 @@ any modulus that fits into an unsigned long.
 
 %package devel
 Summary:        Development files for %{name}
-Group:          Development/Libraries
 Requires:       %{name} = %{version}-%{release}
 
 %description devel
@@ -36,7 +34,6 @@ This package contains the development files.
 
 %package static
 Summary:        Development files for %{name}
-Group:          Development/Libraries
 Requires:       %{name}-devel = %{version}-%{release}
 %description static
 zn_poly is a C library for polynomial arithmetic in Z/nZ[x], where n is