diff --git a/README.md b/README.md
index bc6de0f..f1a0d20 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ Set `ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE` to configure the style that the suggestion
 Set `ZSH_AUTOSUGGEST_STRATEGY` to choose the strategy for generating suggestions. There are currently two to choose from:
 
 - `default`: Chooses the most recent match.
-- `match_prev_cmd`: Chooses the most recent match whose preceding history item matches the most recently executed command ([more info](src/strategies/match_prev_cmd.zsh)).
+- `match_prev_cmd`: Chooses the most recent match whose preceding history item matches the most recently executed command ([more info](src/strategies/match_prev_cmd.zsh)). Note that this strategy won't work as expected with ZSH options that don't preserve the history order such as `HIST_IGNORE_ALL_DUPS` or `HIST_EXPIRE_DUPS_FIRST`.
 
 
 ### Widget Mapping
diff --git a/src/strategies/match_prev_cmd.zsh b/src/strategies/match_prev_cmd.zsh
index e71957e..bf8bdd9 100644
--- a/src/strategies/match_prev_cmd.zsh
+++ b/src/strategies/match_prev_cmd.zsh
@@ -16,6 +16,9 @@
 # will be 'ls foo' rather than 'ls bar' because your most recently
 # executed command (pwd) was previously followed by 'ls foo'.
 #
+# Note that this strategy won't work as expected with ZSH options that don't
+# preserve the history order such as `HIST_IGNORE_ALL_DUPS` or
+# `HIST_EXPIRE_DUPS_FIRST`.
 
 _zsh_autosuggest_strategy_match_prev_cmd() {
 	local prefix="$1"
diff --git a/zsh-autosuggestions.zsh b/zsh-autosuggestions.zsh
index 4e3c62e..7e44a77 100644
--- a/zsh-autosuggestions.zsh
+++ b/zsh-autosuggestions.zsh
@@ -398,6 +398,9 @@ _zsh_autosuggest_strategy_default() {
 # will be 'ls foo' rather than 'ls bar' because your most recently
 # executed command (pwd) was previously followed by 'ls foo'.
 #
+# Note that this strategy won't work as expected with ZSH options that don't
+# preserve the history order such as `HIST_IGNORE_ALL_DUPS` or
+# `HIST_EXPIRE_DUPS_FIRST`.
 
 _zsh_autosuggest_strategy_match_prev_cmd() {
 	local prefix="$1"