diff --git a/.github/workflows/analysis_ports.yml b/.github/workflows/analysis_ports.yml
index f5f3d8baf..f89dc13cb 100644
--- a/.github/workflows/analysis_ports.yml
+++ b/.github/workflows/analysis_ports.yml
@@ -293,17 +293,17 @@ jobs:
           ./configure SHELL=/usr/bin/bash CONFIG_SHELL=/usr/bin/bash --prefix="$prepath/expat" --exec-prefix="$prepath/expat" --bindir="$prepath/expat/bin" --includedir="$prepath/expat/include" --mandir="$prepath/expat/man" --libdir="$prepath/expat/lib"
           # fixup shell from space in pathname
           mv Makefile Makefile.orig
-          sed -e 's?^SHELL=.*$?SHELL=/usr/bin/sh?' < Makefile.orig > Makefile
+          sed -e 's?^SHELL =.*$?SHELL=/usr/bin/sh?' < Makefile.orig > Makefile
           mv lib/Makefile lib/Makefile.orig
-          sed -e 's?^SHELL=.*$?SHELL=/usr/bin/sh?' < lib/Makefile.orig > lib/Makefile
+          sed -e 's?^SHELL =.*$?SHELL=/usr/bin/sh?' < lib/Makefile.orig > lib/Makefile
           mv doc/Makefile doc/Makefile.orig
-          sed -e 's?^SHELL=.*$?SHELL=/usr/bin/sh?' < doc/Makefile.orig > doc/Makefile
+          sed -e 's?^SHELL =.*$?SHELL=/usr/bin/sh?' < doc/Makefile.orig > doc/Makefile
           mv examples/Makefile examples/Makefile.orig
-          sed -e 's?^SHELL=.*$?SHELL=/usr/bin/sh?' < examples/Makefile.orig > examples/Makefile
+          sed -e 's?^SHELL =.*$?SHELL=/usr/bin/sh?' < examples/Makefile.orig > examples/Makefile
           mv tests/Makefile tests/Makefile.orig
-          sed -e 's?^SHELL=.*$?SHELL=/usr/bin/sh?' < tests/Makefile.orig > tests/Makefile
+          sed -e 's?^SHELL =.*$?SHELL=/usr/bin/sh?' < tests/Makefile.orig > tests/Makefile
           mv xmlwf/Makefile xmlwf/Makefile.orig
-          sed -e 's?^SHELL=.*$?SHELL=/usr/bin/sh?' < xmlwf/Makefile.orig > xmlwf/Makefile
+          sed -e 's?^SHELL =.*$?SHELL=/usr/bin/sh?' < xmlwf/Makefile.orig > xmlwf/Makefile
           echo "make"
           make
           echo "make install"