diff --git a/scripts/commitcheck.sh b/scripts/commitcheck.sh
index 0077eb6b0406..cb9fd66c6f46 100755
--- a/scripts/commitcheck.sh
+++ b/scripts/commitcheck.sh
@@ -1,123 +1,123 @@
 #!/bin/sh
 
 REF="HEAD"
 
 # test commit body for length
 # lines containing urls are exempt for the length limit.
 test_commit_bodylength()
 {
     length="72"
-    body=$(git log -n 1 --pretty=%b "$REF" | grep -Ev "http(s)*://" | grep -E -m 1 ".{$((length + 1))}")
+    body=$(git log --no-show-signature -n 1 --pretty=%b "$REF" | grep -Ev "http(s)*://" | grep -E -m 1 ".{$((length + 1))}")
     if [ -n "$body" ]; then
         echo "error: commit message body contains line over ${length} characters"
         return 1
     fi
 
     return 0
 }
 
 # check for a tagged line
 check_tagged_line()
 {
     regex='^[[:space:]]*'"$1"':[[:space:]][[:print:]]+[[:space:]]<[[:graph:]]+>$'
-    foundline=$(git log -n 1 "$REF" | grep -E -m 1 "$regex")
+    foundline=$(git log --no-show-signature -n 1 "$REF" | grep -E -m 1 "$regex")
     if [ -z "$foundline" ]; then
         echo "error: missing \"$1\""
         return 1
     fi
 
     return 0
 }
 
 # check commit message for a normal commit
 new_change_commit()
 {
     error=0
 
     # subject is not longer than 72 characters
-    long_subject=$(git log -n 1 --pretty=%s "$REF" | grep -E -m 1 '.{73}')
+    long_subject=$(git log --no-show-signature -n 1 --pretty=%s "$REF" | grep -E -m 1 '.{73}')
     if [ -n "$long_subject" ]; then
         echo "error: commit subject over 72 characters"
         error=1
     fi
 
     # need a signed off by
     if ! check_tagged_line "Signed-off-by" ; then
         error=1
     fi
 
     # ensure that no lines in the body of the commit are over 72 characters
     if ! test_commit_bodylength ; then
         error=1
     fi
 
     return $error
 }
 
 is_coverity_fix()
 {
     # subject starts with Fix coverity defects means it's a coverity fix
-    subject=$(git log -n 1 --pretty=%s "$REF" | grep -E -m 1 '^Fix coverity defects')
+    subject=$(git log --no-show-signature -n 1 --pretty=%s "$REF" | grep -E -m 1 '^Fix coverity defects')
     if [ -n "$subject" ]; then
         return 0
     fi
 
     return 1
 }
 
 coverity_fix_commit()
 {
     error=0
 
     # subject starts with Fix coverity defects: CID dddd, dddd...
-    subject=$(git log -n 1 --pretty=%s "$REF" |
+    subject=$(git log --no-show-signature -n 1 --pretty=%s "$REF" |
         grep -E -m 1 'Fix coverity defects: CID [[:digit:]]+(, [[:digit:]]+)*')
     if [ -z "$subject" ]; then
         echo "error: Coverity defect fixes must have a subject line that starts with \"Fix coverity defects: CID dddd\""
         error=1
     fi
 
     # need a signed off by
     if ! check_tagged_line "Signed-off-by" ; then
         error=1
     fi
 
     # test each summary line for the proper format
     OLDIFS=$IFS
     IFS='
 '
-    for line in $(git log -n 1 --pretty=%b "$REF" | grep -E '^CID'); do
+    for line in $(git log --no-show-signature -n 1 --pretty=%b "$REF" | grep -E '^CID'); do
         if ! echo "$line" | grep -qE '^CID [[:digit:]]+: ([[:graph:]]+|[[:space:]])+ \(([[:upper:]]|\_)+\)'; then
             echo "error: commit message has an improperly formatted CID defect line"
             error=1
         fi
     done
     IFS=$OLDIFS
 
     # ensure that no lines in the body of the commit are over 72 characters
     if ! test_commit_bodylength; then
         error=1
     fi
 
     return $error
 }
 
 if [ -n "$1" ]; then
     REF="$1"
 fi
 
 # if coverity fix, test against that
 if is_coverity_fix; then
     if ! coverity_fix_commit; then
         exit 1
     else
         exit 0
     fi
 fi
 
 # have a normal commit
 if ! new_change_commit ; then
     exit 1
 fi
 
 exit 0