diff --git a/common/libs/func_wrt_Makefile b/common/libs/func_wrt_Makefile
index 94fd9e0..943ad49 100644
--- a/common/libs/func_wrt_Makefile
+++ b/common/libs/func_wrt_Makefile
@@ -105,7 +105,7 @@ cat << EOF
 
 $i:  $PREV
 	@\$(call echo_message, Building)
-	@export SHELL=\$(SHELL) && \$(SHELL) progress_bar.sh \$@ \$\$PPID &
+	@export BASHBIN=\$(SHELL) && \$(SHELL) progress_bar.sh \$@ \$\$PPID &
 	@echo "\$(nl_)\`date\`\$(nl_)" >logs/\$@
 	@\$(PRT_DU) >>logs/\$@
 EOF
@@ -122,7 +122,7 @@ cat << EOF
 
 $i:  $PREV
 	@\$(call echo_message, Building)
-	@export SHELL=\$(SHELL) && \$(SHELL) progress_bar.sh \$@ \$\$PPID &
+	@export BASHBIN=\$(SHELL) && \$(SHELL) progress_bar.sh \$@ \$\$PPID &
 	@echo "\$(nl_)\`date\`\$(nl_)" >logs/\$@
 	@\$(PRT_DU_CR) >>logs/\$@
 EOF
diff --git a/common/progress_bar.sh b/common/progress_bar.sh
index 4fa8cb1..41926fe 100644
--- a/common/progress_bar.sh
+++ b/common/progress_bar.sh
@@ -24,10 +24,10 @@ declare -i  SEC=0  # Seconds accumulator
 declare -i  PREV_SEC=0
 
 # Prevent segfault on stripping phases
-if [[ "$SHELL" = "/bin/bash" ]] ; then
-  SLEEP=/bin/sleep
-else
+if [[ "$BASHBIN" = "/tools/bin/bash" ]] ; then
   SLEEP=/tools/bin/sleep
+else
+  SLEEP=/bin/sleep
 fi
 
 write_or_exit() {