diff --git a/src/ShellCheck/Analytics.hs b/src/ShellCheck/Analytics.hs
index a4e2186a4..db2614bf1 100644
--- a/src/ShellCheck/Analytics.hs
+++ b/src/ShellCheck/Analytics.hs
@@ -269,6 +269,13 @@ optionalTreeChecks = [
         cdNegative = "[[ -e /etc/issue ]]"
     }, checkRequireDoubleBracket)
 
+    ,(newCheckDescription {
+        cdName = "require-double-equals",
+        cdDescription = "Require == and warn about = in Bash tests",
+        cdPositive = "[[ \"$x\" = \"$y\" ]]",
+        cdNegative = "[[ \"$x\" == \"$y\" ]]"
+    }, checkRequireDoubleEquals)
+
     ,(newCheckDescription {
         cdName = "check-set-e-suppressed",
         cdDescription = "Notify when set -e is suppressed during function invocation",
@@ -4718,6 +4725,22 @@ checkRequireDoubleBracket params =
         _ -> False
 
 
+prop_checkRequireDoubleEquals1 = verifyTree checkRequireDoubleEquals "[[ \"$x\" = \"$y\" ]]"
+prop_checkRequireDoubleEquals2 = verifyTree checkRequireDoubleEquals "[ \"$x\" = \"$y\" ]"
+prop_checkRequireDoubleEquals3 = verifyNotTree checkRequireDoubleEquals "[[ \"$x\" == \"$y\" ]]"
+prop_checkRequireDoubleEquals4 = verifyNotTree checkRequireDoubleEquals "#!/bin/sh\n[ \"$x\" = \"$y\" ]"
+prop_checkRequireDoubleEquals5 = verifyNotTree checkRequireDoubleEquals "#!/bin/ksh\n[[ \"$x\" = \"$y\" ]]"
+checkRequireDoubleEquals params =
+    if shellType params == Bash
+    then nodeChecksToTreeCheck [check] params
+    else const []
+  where
+    check _ t = case t of
+        TC_Binary id _ "=" _ _ ->
+            style id 2337 "Prefer == over = for string comparisons in Bash tests."
+        _ -> return ()
+
+
 prop_checkUnquotedParameterExpansionPattern1 = verify checkUnquotedParameterExpansionPattern  "echo \"${var#$x}\""
 prop_checkUnquotedParameterExpansionPattern2 = verify checkUnquotedParameterExpansionPattern  "echo \"${var%%$(x)}\""
 prop_checkUnquotedParameterExpansionPattern3 = verifyNot checkUnquotedParameterExpansionPattern  "echo \"${var[#$x]}\""