diff --git a/sysa/linux-headers-5.10.41/linux-headers-5.10.41.sh b/sysa/linux-headers-5.10.41/linux-headers-5.10.41.sh
index c189420..e1c2d8e 100755
--- a/sysa/linux-headers-5.10.41/linux-headers-5.10.41.sh
+++ b/sysa/linux-headers-5.10.41/linux-headers-5.10.41.sh
@@ -23,7 +23,7 @@ src_compile() {
 }
 
 src_install() {
-    export base_dir="${PWD}"
+    base_dir="${PWD}"
     # We "compile" the headers here because it is easier
     for d in include/uapi arch/x86/include/uapi; do
         cd "${d}"
diff --git a/sysb/run.sh b/sysb/run.sh
index 8606519..653a66e 100755
--- a/sysb/run.sh
+++ b/sysb/run.sh
@@ -75,7 +75,7 @@ if [ $(($(ls -l "/dev/${DISK}" | sed "s/.*, *//" | sed "s/ .*//") % 8)) -eq 0 ];
     mkfs.ext4 "/dev/${DISK}1"
     DISK="${DISK}1"
 fi
-echo "export DISK=${DISK}" >> /usr/src/bootstrap.cfg
+echo "DISK=${DISK}" >> /usr/src/bootstrap.cfg
 
 SYSC=/sysc
 
diff --git a/sysc/autogen-5.18.16/autogen-5.18.16.sh b/sysc/autogen-5.18.16/autogen-5.18.16.sh
index 99e9479..f53a1b6 100755
--- a/sysc/autogen-5.18.16/autogen-5.18.16.sh
+++ b/sysc/autogen-5.18.16/autogen-5.18.16.sh
@@ -15,13 +15,13 @@ src_prepare() {
 src_compile() {
 (
     set -e
-    export PKG_CONFIG_PATH="${LIBDIR}/pkgconfig"
+    declare -x PKG_CONFIG_PATH="${LIBDIR}/pkgconfig"
     sed -i "s/make install/make install DESTDIR=\${DESTDIR}/" bootstrap_tarball.sh
     sed -i "/make check/d" bootstrap_tarball.sh
-    export FINALPREFIX="${PREFIX}"
-    export GUILE_STATIC="--static"
-    export GNULIBDIR="${PWD}"/../gnulib-8f4538a5
-    export MAN_PAGE_DATE=1970-01-01
+    declare -x FINALPREFIX="${PREFIX}"
+    declare -x GUILE_STATIC="--static"
+    declare -x GNULIBDIR="${PWD}"/../gnulib-8f4538a5
+    declare -x MAN_PAGE_DATE=1970-01-01
 
     SKIP_MAIN=1 . ./bootstrap_tarball.sh
     prepare_tarball
diff --git a/sysc/openssl-1.1.1l/openssl-1.1.1l.sh b/sysc/openssl-1.1.1l/openssl-1.1.1l.sh
index 3d846a6..56ddcc5 100755
--- a/sysc/openssl-1.1.1l/openssl-1.1.1l.sh
+++ b/sysc/openssl-1.1.1l/openssl-1.1.1l.sh
@@ -23,7 +23,7 @@ src_configure() {
 }
 
 src_compile() {
-    export SOURCE_DATE_EPOCH=1638831119
+    declare -x SOURCE_DATE_EPOCH=1638831119
     default
 }