diff --git a/developer/bin/project_stats b/developer/bin/project_stats
index ae97e103c1..767e8e0d13 100755
--- a/developer/bin/project_stats
+++ b/developer/bin/project_stats
@@ -26,7 +26,7 @@ warn_if_off_branch () {
     if [[ -n "$1" ]]; then
         wanted_branch="$1"
     fi
-    if [[ "$branch" != "$wanted_branch" ]]; then
+    if ! [[ "$branch" = "$wanted_branch" ]]; then
         printf "\nWARNING: you are running from branch '$branch', not '$wanted_branch'\n\n"
     fi
 }
@@ -60,7 +60,7 @@ _homebrew_cask_project_stats () {
     verify_git_object "$start_object"
 
     printf "Unique contributors"
-    if [[ "$start_object" != "$initial_commit" ]]; then
+    if ! [[ "$start_object" = "$initial_commit" ]]; then
         printf " since $start_object"
     fi
     printf "\n"
@@ -75,7 +75,7 @@ _homebrew_cask_project_stats () {
     $git_log_cmd -- $doc_paths  | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l
     printf "  any\t"
     $git_log_cmd -- .           | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l
-    if [[ "$start_object" != "$initial_commit" ]]; then
+    if ! [[ "$start_object" = "$initial_commit" ]]; then
         local alltime_contribs="$(git log --no-merges --format='%ae' ${initial_commit}..${end_object} -- . | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
         local prior_contribs="$(git log --no-merges --format='%ae' ${initial_commit}..${start_object} -- . | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
         # arithmetic removes whitespace
@@ -87,7 +87,7 @@ _homebrew_cask_project_stats () {
 
     printf "\n"
 
-    if [[ "$start_object" != "$initial_commit" ]]; then
+    if ! [[ "$start_object" = "$initial_commit" ]]; then
         local new_casks="$(git diff --name-status "$start_object" "$end_object" -- $cask_paths | /usr/bin/grep '^A.*\.rb' | cut -f2 | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
         local deleted_casks="$(git diff --name-status "$start_object" "$end_object" -- $cask_paths | /usr/bin/grep '^D.*\.rb' | cut -f2 | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"
         local updated_casks="$(git diff --name-status "$start_object" "$end_object" -- $cask_paths | /usr/bin/grep '^M.*\.rb' | cut -f2 | /usr/bin/sort | /usr/bin/uniq | /usr/bin/wc -l)"