diff --git a/config.xsd b/config.xsd
index 122f3e4b8..daeea2ddc 100644
--- a/config.xsd
+++ b/config.xsd
@@ -62,7 +62,7 @@
         <xs:attribute name="throwExceptionOnError" type="xs:boolean" default="false" />
         <xs:attribute name="totallyTyped" type="xs:boolean" default="false" />
         <xs:attribute name="errorLevel" type="xs:integer" default="1" />
-        <xs:attribute name="suppressMixedIssues" type="xs:boolean" default="false" />
+        <xs:attribute name="reportMixedIssues" type="xs:boolean" default="true" />
         <xs:attribute name="useAssertForType" type="xs:boolean" default="true" />
         <xs:attribute name="useDocblockTypes" type="xs:boolean" default="true" />
         <xs:attribute name="useDocblockPropertyTypes" type="xs:boolean" default="false" />
diff --git a/docs/running_psalm/configuration.md b/docs/running_psalm/configuration.md
index 244571b24..4288cc77c 100644
--- a/docs/running_psalm/configuration.md
+++ b/docs/running_psalm/configuration.md
@@ -47,6 +47,15 @@ Configuration file may be split into several files using [XInclude](https://www.
 ```
 This corresponds to Psalm‘s [error-detection level](error_levels.md).
 
+#### reportMixedIssues
+
+```xml
+<psalm
+  reportMixedIssues="[bool]"
+/>
+```
+Setting this to `"false"` hides all issues with `Mixed` types in Psalm’s output. If not given, this defaults to `"false"` when `errorLevel` is 3 or higher, and `"true"` when the error level is 1 or 2.
+
 #### totallyTyped
 
 ```xml
@@ -54,7 +63,10 @@ This corresponds to Psalm‘s [error-detection level](error_levels.md).
   totallyTyped="[bool]"
 />
 ```
-Enabling this will make Psalm very strict, such that it needs to be able to evaluate the type of every single statement, and emitting a bevy of `Mixed*` issues if the types cannot be determined. Defaults to `false`.
+
+\(Deprecated\) Setting `totallyTyped` to `"true"` is equivalent to setting `errorLevel` to `"1"`. Setting `totallyTyped` to `"false"` is equivalent to setting `errorLevel` to `"2"` and `reportMixedIssues` to `"false"`
+
+
 
 #### resolveFromConfigFile
 
diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index 7e6fa8609..f1db1b187 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -248,7 +248,7 @@ class Config
     /**
      * @var ?bool
      */
-    public $suppress_mixed_issues = null;
+    public $show_mixed_issues = null;
 
     /** @var bool */
     public $strict_binary_operands = false;
@@ -764,7 +764,7 @@ class Config
             'loadXdebugStub' => 'load_xdebug_stub',
             'ensureArrayStringOffsetsExist' => 'ensure_array_string_offsets_exist',
             'ensureArrayIntOffsetsExist' => 'ensure_array_int_offsets_exist',
-            'suppressMixedIssues' => 'suppress_mixed_issues',
+            'reportMixedIssues' => 'show_mixed_issues',
         ];
 
         foreach ($booleanAttributes as $xmlName => $internalName) {
@@ -849,8 +849,8 @@ class Config
             } else {
                 $config->level = 2;
 
-                if ($config->suppress_mixed_issues === null) {
-                    $config->suppress_mixed_issues = true;
+                if ($config->show_mixed_issues === null) {
+                    $config->show_mixed_issues = false;
                 }
             }
         } else {
@@ -1264,7 +1264,9 @@ class Config
      */
     public function reportIssueInFile($issue_type, $file_path)
     {
-        if (($this->suppress_mixed_issues || $this->level > 2) && in_array($issue_type, self::MIXED_ISSUES, true)) {
+        if (($this->show_mixed_issues === false || $this->level > 2)
+            && in_array($issue_type, self::MIXED_ISSUES, true)
+        ) {
             return false;
         }