diff --git a/samples/example_app/build_android.sh b/samples/example_app/build_android.sh
index 41d184f0c5..e0e11eb51b 100755
--- a/samples/example_app/build_android.sh
+++ b/samples/example_app/build_android.sh
@@ -12,8 +12,10 @@ export BOINC_LIB_DIR="$BOINC_DIR/lib"
 export BOINC_ZIP_DIR="$BOINC_DIR/zip"
 
 export PATH="$PATH:$TCBINARIES:$TCINCLUDES/bin"
+export CC=arm-linux-androideabi-gcc
 export CXX=arm-linux-androideabi-g++
 export LD=arm-linux-androideabi-ld
+export CFLAGS="--sysroot=$TCSYSROOT -DANDROID -DDECLARE_TIMEZONE -Wall -I$TCINCLUDES/include -O3 -fomit-frame-pointer -I$TCINCLUDES/include -I$BOINC_DIR -I$BOINC_LIB_DIR -I$BOINC_API_DIR -I$BOINC_ZIP_DIR"
 export CXXFLAGS="--sysroot=$TCSYSROOT -DANDROID -Wall  -funroll-loops -fexceptions -O3 -fomit-frame-pointer -I$TCINCLUDES/include -I$BOINC_DIR -I$BOINC_LIB_DIR -I$BOINC_API_DIR -I$BOINC_ZIP_DIR"
 export LDFLAGS="-L$TCSYSROOT/usr/lib -L$TCINCLUDES/lib -L$BOINC_DIR -L$BOINC_LIB_DIR -L$BOINC_API_DIR -L$BOINC_ZIP_DIR -llog"
 export GDB_CFLAGS="--sysroot=$TCSYSROOT -Wall -g -I$TCINCLUDES/include"
diff --git a/samples/wrapper/build_android.sh b/samples/wrapper/build_android.sh
index 41d184f0c5..e0e11eb51b 100755
--- a/samples/wrapper/build_android.sh
+++ b/samples/wrapper/build_android.sh
@@ -12,8 +12,10 @@ export BOINC_LIB_DIR="$BOINC_DIR/lib"
 export BOINC_ZIP_DIR="$BOINC_DIR/zip"
 
 export PATH="$PATH:$TCBINARIES:$TCINCLUDES/bin"
+export CC=arm-linux-androideabi-gcc
 export CXX=arm-linux-androideabi-g++
 export LD=arm-linux-androideabi-ld
+export CFLAGS="--sysroot=$TCSYSROOT -DANDROID -DDECLARE_TIMEZONE -Wall -I$TCINCLUDES/include -O3 -fomit-frame-pointer -I$TCINCLUDES/include -I$BOINC_DIR -I$BOINC_LIB_DIR -I$BOINC_API_DIR -I$BOINC_ZIP_DIR"
 export CXXFLAGS="--sysroot=$TCSYSROOT -DANDROID -Wall  -funroll-loops -fexceptions -O3 -fomit-frame-pointer -I$TCINCLUDES/include -I$BOINC_DIR -I$BOINC_LIB_DIR -I$BOINC_API_DIR -I$BOINC_ZIP_DIR"
 export LDFLAGS="-L$TCSYSROOT/usr/lib -L$TCINCLUDES/lib -L$BOINC_DIR -L$BOINC_LIB_DIR -L$BOINC_API_DIR -L$BOINC_ZIP_DIR -llog"
 export GDB_CFLAGS="--sysroot=$TCSYSROOT -Wall -g -I$TCINCLUDES/include"