diff --git a/pkgs/applications/office/libreoffice/default.nix b/pkgs/applications/office/libreoffice/default.nix
index 75d780f23338..ccf0b69d7c66 100644
--- a/pkgs/applications/office/libreoffice/default.nix
+++ b/pkgs/applications/office/libreoffice/default.nix
@@ -66,7 +66,7 @@ in stdenv.mkDerivation rec {
 
   # For some reason librdf_redland sometimes refers to rasqal.h instead
   # of rasqal/rasqal.h
-  NIX_CFLAGS_COMPILE = [ "-I${librdf_rasqal}/include/rasqal" "-mno-fma" ];
+  NIX_CFLAGS_COMPILE = [ "-I${librdf_rasqal}/include/rasqal" ] ++ lib.optional stdenv.isx86_64 "-mno-fma";
 
   patches = [
     ./xdg-open-brief.patch
diff --git a/pkgs/applications/office/libreoffice/still.nix b/pkgs/applications/office/libreoffice/still.nix
index 9e6671838cd8..200677435eb6 100644
--- a/pkgs/applications/office/libreoffice/still.nix
+++ b/pkgs/applications/office/libreoffice/still.nix
@@ -66,7 +66,7 @@ in stdenv.mkDerivation rec {
 
   # For some reason librdf_redland sometimes refers to rasqal.h instead
   # of rasqal/rasqal.h
-  NIX_CFLAGS_COMPILE = [ "-I${librdf_rasqal}/include/rasqal" "-mno-fma" ];
+  NIX_CFLAGS_COMPILE = [ "-I${librdf_rasqal}/include/rasqal" ] ++ lib.optional stdenv.isx86_64 "-mno-fma";
 
   patches = [
     ./xdg-open-brief.patch
diff --git a/pkgs/development/libraries/gsl/default.nix b/pkgs/development/libraries/gsl/default.nix
index 6e6b74d514e9..c8846509d004 100644
--- a/pkgs/development/libraries/gsl/default.nix
+++ b/pkgs/development/libraries/gsl/default.nix
@@ -8,7 +8,8 @@ stdenv.mkDerivation rec {
     sha256 = "1395y9hlhqadn5g9j8q22224fds5sd92jxi9czfavjj24myasq04";
   };
 
-  NIX_CFLAGS_COMPILE = [ "-mno-fma" ]; # do not let -march=skylake to enable FMA (https://lists.gnu.org/archive/html/bug-gsl/2011-11/msg00019.html)
+  # do not let -march=skylake to enable FMA (https://lists.gnu.org/archive/html/bug-gsl/2011-11/msg00019.html)
+  NIX_CFLAGS_COMPILE = stdenv.lib.optional stdenv.isx86_64 "-mno-fma";
 
   # https://lists.gnu.org/archive/html/bug-gsl/2015-11/msg00012.html
   doCheck = stdenv.hostPlatform.system != "i686-linux" && stdenv.hostPlatform.system != "aarch64-linux";
diff --git a/pkgs/development/libraries/gsl/gsl-1_16.nix b/pkgs/development/libraries/gsl/gsl-1_16.nix
index 07dee287714a..e5772c8772ec 100644
--- a/pkgs/development/libraries/gsl/gsl-1_16.nix
+++ b/pkgs/development/libraries/gsl/gsl-1_16.nix
@@ -8,7 +8,8 @@ stdenv.mkDerivation rec {
     sha256 = "0lrgipi0z6559jqh82yx8n4xgnxkhzj46v96dl77hahdp58jzg3k";
   };
 
-  NIX_CFLAGS_COMPILE = [ "-mno-fma" ]; # do not let -march=skylake to enable FMA (https://lists.gnu.org/archive/html/bug-gsl/2011-11/msg00019.html)
+  # do not let -march=skylake to enable FMA (https://lists.gnu.org/archive/html/bug-gsl/2011-11/msg00019.html)
+  NIX_CFLAGS_COMPILE = stdenv.lib.optional stdenv.isx86_64 "-mno-fma";
 
   patches = [
     (fetchpatch {