diff --git a/dist-build/android.sh b/dist-build/android.sh
index e213de6a..c40eec2a 100755
--- a/dist-build/android.sh
+++ b/dist-build/android.sh
@@ -43,5 +43,6 @@ export PREFIX="$(pwd)/libsodium-android"
             --disable-pie \
             --disable-shared \
             --prefix="$PREFIX" && \
-make -j3 install &&
+make clean && \
+make -j3 install && \
 echo "libsodium has been installed into $PREFIX"
diff --git a/dist-build/iphone.sh b/dist-build/iphone.sh
index cb322d73..f4a75056 100755
--- a/dist-build/iphone.sh
+++ b/dist-build/iphone.sh
@@ -11,5 +11,6 @@ export PREFIX="$(pwd)/libsodium-ios"
 ./configure --host=arm-apple-darwin10 \
             --disable-shared \
             --prefix="$PREFIX" && \
+make clean && \
 make -j3 install && \
 echo "libsodium has been installed into $PREFIX"