diff --git a/bin/tmuxifier b/bin/tmuxifier
index 624e0f9..9ab31e5 100755
--- a/bin/tmuxifier
+++ b/bin/tmuxifier
@@ -24,13 +24,13 @@ case "$command" in
     ;;
 
   * )
-    command_path="$(command -v "tmuxifier-$command" || true)"
+    ! command_path="$(command -v "tmuxifier-$command")"
 
     # Attempt to resolve aliases
     if [ -z "$command_path" ]; then
       resolved="$(tmuxifier-alias "$command")"
       if [ ! -z "$resolved" ]; then
-        command_path="$(command -v "tmuxifier-$resolved" || true)"
+        ! command_path="$(command -v "tmuxifier-$resolved")"
       fi
     fi
 
diff --git a/lib/layout-helpers.sh b/lib/layout-helpers.sh
index 0293396..b293f3b 100644
--- a/lib/layout-helpers.sh
+++ b/lib/layout-helpers.sh
@@ -157,7 +157,7 @@ initialize_session() {
 # created, the session already exists, and we'll need to specifically switch
 # to it here.
 finalize_and_go_to_session() {
-  tmux kill-window -t "$session:99" 2>/dev/null || true
+  ! tmux kill-window -t "$session:99" 2>/dev/null
   if [[ "$(tmuxifier-current-session)" != "$session" ]]; then
     __go_to_session
   fi
diff --git a/libexec/tmuxifier-completions b/libexec/tmuxifier-completions
index 3da0423..5281b50 100755
--- a/libexec/tmuxifier-completions
+++ b/libexec/tmuxifier-completions
@@ -18,13 +18,13 @@ if [ -z "$command" ]; then
   exit 1
 fi
 
-command_path="$(command -v "tmuxifier-$command" || true)"
+! command_path="$(command -v "tmuxifier-$command")"
 
 # Attempt to resolve aliases
 if [ -z "$command_path" ]; then
   resolved="$(tmuxifier-alias "$command")"
   if [ ! -z "$resolved" ]; then
-    command_path="$(command -v "tmuxifier-$resolved" || true)"
+    ! command_path="$(command -v "tmuxifier-$resolved")"
   fi
 fi
 
diff --git a/libexec/tmuxifier-help b/libexec/tmuxifier-help
index b53f269..e0b9051 100755
--- a/libexec/tmuxifier-help
+++ b/libexec/tmuxifier-help
@@ -9,14 +9,14 @@ if [ "$1" == "--complete" ]; then
 fi
 
 command="$1"
-command_path="$(command -v "tmuxifier-$command" || true)"
+! command_path="$(command -v "tmuxifier-$command")"
 
 # Attempt to resolve aliases
 if [ -z "$command_path" ]; then
   resolved="$(tmuxifier-alias "$command")"
   if [ ! -z "$resolved" ]; then
     command="$resolved"
-    command_path="$(command -v "tmuxifier-$command" || true)"
+    ! command_path="$(command -v "tmuxifier-$command")"
   fi
 fi