diff --git a/Configurations/15-android.conf b/Configurations/15-android.conf
index e7c9fa0d1d51ec5bbab28ec3b73e94e1453af29c..36daf3179b15f2ff7b2048f6dece023142994216 100644
--- a/Configurations/15-android.conf
+++ b/Configurations/15-android.conf
@@ -160,14 +160,17 @@ my %targets = (
         # -march and/or -mfloat-abi flags. NDK defaults to armv5te.
         #
         inherit_from     => [ "android", asm("armv4_asm") ],
+        bn_ops           => add("RC4_CHAR"),
     },
     "android-arm64" => {
         inherit_from     => [ "android", asm("aarch64_asm") ],
+        bn_ops           => add("RC4_CHAR"),
         perlasm_scheme   => "linux64",
     },
 
     "android-mips" => {
         inherit_from     => [ "android", asm("mips32_asm") ],
+        bn_ops           => add("RC4_CHAR"),
         perlasm_scheme   => "o32",
     },
     "android-mips64" => {
@@ -181,6 +184,7 @@ my %targets = (
         # prior versions original MIPS binary code will fail.
         #
         inherit_from     => [ "android", asm("mips64_asm") ],
+        bn_ops           => add("RC4_CHAR"),
         perlasm_scheme   => "64",
     },