diff --git a/configure.in b/configure.in
index 14e34c85717..74127047173 100644
--- a/configure.in
+++ b/configure.in
@@ -495,7 +495,7 @@ case "$target" in
         AC_LANG_RESTORE
 
         changequote(,)
-        _MSVC_VER_FILTER='s|.* ([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
+        _MSVC_VER_FILTER='s|.*[^!-~]([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
         changequote([,])
 
         # Determine compiler version
@@ -571,7 +571,7 @@ case "$target" in
         fi
 
         changequote(,)
-        _MSMT_VER_FILTER='s|.* \([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p'
+        _MSMT_VER_FILTER='s|.*[^!-~]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p'
         changequote([,])
         MSMANIFEST_TOOL_VERSION=`echo ${MSMT_TOOL}|sed -ne "$_MSMT_VER_FILTER"`
         if test -z "$MSMANIFEST_TOOL_VERSION"; then
diff --git a/js/src/configure.in b/js/src/configure.in
index d6d867c35eb..59f4985b69c 100644
--- a/js/src/configure.in
+++ b/js/src/configure.in
@@ -468,7 +468,7 @@ case "$target" in
         AC_LANG_RESTORE
 
         changequote(,)
-        _MSVC_VER_FILTER='s|.* ([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
+        _MSVC_VER_FILTER='s|.*[^!-~]([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
         changequote([,])
 
         # Determine compiler version
@@ -521,7 +521,7 @@ case "$target" in
         fi
 
         changequote(,)
-        _MSMT_VER_FILTER='s|.* \([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p'
+        _MSMT_VER_FILTER='s|.*[^!-~]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p'
         changequote([,])
         MSMANIFEST_TOOL_VERSION=`echo ${MSMT_TOOL}|sed -ne "$_MSMT_VER_FILTER"`
         if test -z "$MSMANIFEST_TOOL_VERSION"; then
diff --git a/nsprpub/configure.in b/nsprpub/configure.in
index da7961c9a72..a6a67ba5a33 100644
--- a/nsprpub/configure.in
+++ b/nsprpub/configure.in
@@ -1877,7 +1877,7 @@ tools are selected during the Xcode/Developer Tools installation.])
 
         # Determine compiler version
         changequote(,)
-        _MSVC_VER_FILTER='s|.* \([0-9]\+\.[0-9]\+\.[0-9]\+\(\.[0-9]\+\)\?\).*|\1|p'
+        _MSMT_VER_FILTER='s|.*[^!-~]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p'
         changequote([,])
         CC_VERSION=`"${CC}" -v 2>&1 | sed -ne "$_MSVC_VER_FILTER"`
         _CC_MAJOR_VERSION=`echo ${CC_VERSION} | awk -F\. '{ print $1 }'`