diff --git a/kcalc.spec b/kcalc.spec
index 9d78695..e4b4919 100644
--- a/kcalc.spec
+++ b/kcalc.spec
@@ -22,7 +22,6 @@ BuildRequires: desktop-file-utils
 BuildRequires: libappstream-glib
 
 BuildRequires: extra-cmake-modules
-BuildRequires: gmp-devel
 BuildRequires: kf5-rpm-macros
 BuildRequires: kf5-kcompletion-devel
 BuildRequires: kf5-kconfig-devel
@@ -51,6 +50,9 @@ BuildRequires: cmake(KF5Crash)
 
 BuildRequires: pkgconfig(Qt5Widgets)
 
+BuildRequires: gmp-devel
+BuildRequires: mpfr-devel
+
 %{?kf5_kinit_requires}
 
 # when split occured