diff --git a/src/GPU/Install.csh b/src/GPU/Install.csh
index 80f0783fd8..2f89ea95da 100644
--- a/src/GPU/Install.csh
+++ b/src/GPU/Install.csh
@@ -4,9 +4,9 @@
 
 if ($1 == 1) then
 
-  sed -i 's/\S*gpu //' ../Makefile.package
-  sed -i 's|^PKGPATH =\s*|&-L../../lib/gpu |' ../Makefile.package
-  sed -i 's|^PKGLIB =\s*|&-lgpu |' ../Makefile.package
+  sed -i -e 's/[^ \t]*gpu //' ../Makefile.package
+  sed -i -e 's|^PKGPATH =[ \t]*|&-L../../lib/gpu |' ../Makefile.package
+  sed -i -e 's|^PKGLIB =[ \t]*|&-lgpu |' ../Makefile.package
 
   cp style_gpu.h tmp.h
   if (! -e ../pair_gayberne.cpp) then
@@ -25,7 +25,7 @@ if ($1 == 1) then
 
 else if ($1 == 0) then
 
-  sed -i 's/\S*gpu //' ../Makefile.package
+  sed -i -e 's/[^ \t]*gpu //' ../Makefile.package
 
   rm ../style_gpu.h
   touch ../style_gpu.h
diff --git a/src/MEAM/Install.csh b/src/MEAM/Install.csh
index 0e30346b6f..2321b70100 100644
--- a/src/MEAM/Install.csh
+++ b/src/MEAM/Install.csh
@@ -3,10 +3,10 @@
 
 if ($1 == 1) then
 
-  sed -i 's/\S*meam //' ../Makefile.package
-  sed -i 's|^PKGINC =\s*|&-I../../lib/meam |' ../Makefile.package
-  sed -i 's|^PKGPATH =\s*|&-L../../lib/meam |' ../Makefile.package
-  sed -i 's|^PKGLIB =\s*|&-lmeam |' ../Makefile.package
+  sed -i -e 's/[^ \t]*meam //' ../Makefile.package
+  sed -i -e 's|^PKGINC =[ \t]*|&-I../../lib/meam |' ../Makefile.package
+  sed -i -e 's|^PKGPATH =[ \t]*|&-L../../lib/meam |' ../Makefile.package
+  sed -i -e 's|^PKGLIB =[ \t]*|&-lmeam |' ../Makefile.package
 
   cp style_meam.h ..
 
@@ -16,7 +16,7 @@ if ($1 == 1) then
 
 else if ($1 == 0) then
 
-  sed -i 's/\S*meam //' ../Makefile.package
+  sed -i -e 's/[^ \t]*meam //' ../Makefile.package
 
   rm ../style_meam.h
   touch ../style_meam.h
diff --git a/src/Makefile.package b/src/Makefile.package
index d54a74f2d1..96c121f003 100644
--- a/src/Makefile.package
+++ b/src/Makefile.package
@@ -1,6 +1,6 @@
 # Settings for libraries used by specific LAMMPS packages
 # this file is auto-edited when those packages are included/excluded
 
-PKGINC =   -I../../lib/reax -I../../lib/poems -I../../lib/meam 
-PKGPATH =  -L../../lib/reax -L../../lib/poems -L../../lib/meam 
-PKGLIB =   -lreax -lpoems -lmeam 
+PKGINC =   -I../../lib/meam -I../../lib/reax -I../../lib/poems 
+PKGPATH =  -L../../lib/meam -L../../lib/reax -L../../lib/poems 
+PKGLIB =   -lmeam -lreax -lpoems 
diff --git a/src/POEMS/Install.csh b/src/POEMS/Install.csh
index 65398f1b5f..4548765de0 100644
--- a/src/POEMS/Install.csh
+++ b/src/POEMS/Install.csh
@@ -3,10 +3,10 @@
 
 if ($1 == 1) then
 
-  sed -i 's/\S*poems //' ../Makefile.package
-  sed -i 's|^PKGINC =\s*|&-I../../lib/poems |' ../Makefile.package
-  sed -i 's|^PKGPATH =\s*|&-L../../lib/poems |' ../Makefile.package
-  sed -i 's|^PKGLIB =\s*|&-lpoems |' ../Makefile.package
+  sed -i -e 's/[^ \t]*poems //' ../Makefile.package
+  sed -i -e 's|^PKGINC =[ \t]*|&-I../../lib/poems |' ../Makefile.package
+  sed -i -e 's|^PKGPATH =[ \t]*|&-L../../lib/poems |' ../Makefile.package
+  sed -i -e 's|^PKGLIB =[ \t]*|&-lpoems |' ../Makefile.package
 
   cp style_poems.h ..
 
@@ -16,7 +16,7 @@ if ($1 == 1) then
 
 else if ($1 == 0) then
 
-  sed -i 's/\S*poems //' ../Makefile.package
+  sed -i -e 's/[^ \t]*poems //' ../Makefile.package
 
   rm ../style_poems.h
   touch ../style_poems.h
diff --git a/src/REAX/Install.csh b/src/REAX/Install.csh
index 5b008a8e42..df3eb4d0a3 100644
--- a/src/REAX/Install.csh
+++ b/src/REAX/Install.csh
@@ -3,10 +3,10 @@
 
 if ($1 == 1) then
 
-  sed -i 's/\S*reax //' ../Makefile.package
-  sed -i 's|^PKGINC =\s*|&-I../../lib/reax |' ../Makefile.package
-  sed -i 's|^PKGPATH =\s*|&-L../../lib/reax |' ../Makefile.package
-  sed -i 's|^PKGLIB =\s*|&-lreax |' ../Makefile.package
+  sed -i -e 's/[^ \t]*reax //' ../Makefile.package
+  sed -i -e 's|^PKGINC =[ \t]*|&-I../../lib/reax |' ../Makefile.package
+  sed -i -e 's|^PKGPATH =[ \t]*|&-L../../lib/reax |' ../Makefile.package
+  sed -i -e 's|^PKGLIB =[ \t]*|&-lreax |' ../Makefile.package
 
   cp style_reax.h ..
 
@@ -20,7 +20,7 @@ if ($1 == 1) then
 
 else if ($1 == 0) then
 
-  sed -i 's/\S*reax //' ../Makefile.package
+  sed -i -e 's/[^ \t]*reax //' ../Makefile.package
 
   rm ../style_reax.h
   touch ../style_reax.h