diff --git a/src/Psalm/Internal/Type/SimpleNegatedAssertionReconciler.php b/src/Psalm/Internal/Type/SimpleNegatedAssertionReconciler.php
index 878111b32..dd593f18c 100644
--- a/src/Psalm/Internal/Type/SimpleNegatedAssertionReconciler.php
+++ b/src/Psalm/Internal/Type/SimpleNegatedAssertionReconciler.php
@@ -1170,6 +1170,10 @@ class SimpleNegatedAssertionReconciler extends Reconciler
                 } elseif ($existing_var_type->from_calculation) {
                     $non_int_types[] = new TFloat();
                 }
+            } elseif ($type instanceof TNumeric) {
+                $did_remove_type = true;
+                $non_int_types[] = new TString();
+                $non_int_types[] = new TFloat();
             } else {
                 $non_int_types[] = $type;
             }
@@ -1261,6 +1265,10 @@ class SimpleNegatedAssertionReconciler extends Reconciler
                 if ($is_equality) {
                     $non_float_types[] = $type;
                 }
+            } elseif ($type instanceof TNumeric) {
+                $did_remove_type = true;
+                $non_float_types[] = new TString();
+                $non_float_types[] = new TInt();
             } else {
                 $non_float_types[] = $type;
             }
diff --git a/tests/TypeReconciliation/RedundantConditionTest.php b/tests/TypeReconciliation/RedundantConditionTest.php
index 92501bdcb..308b06d32 100644
--- a/tests/TypeReconciliation/RedundantConditionTest.php
+++ b/tests/TypeReconciliation/RedundantConditionTest.php
@@ -827,6 +827,21 @@ class RedundantConditionTest extends \Psalm\Tests\TestCase
                         return false;
                     }'
             ],
+            'NumericCanBeNotIntOrNotFloat' => [
+                '<?php
+                    /** @param mixed $a */
+                    function a($a): void{
+                        if (is_numeric($a)) {
+                            assert(!is_float($a));
+                        }
+                    }
+                    /** @param mixed $a */
+                    function b($a): void{
+                        if (is_numeric($a)) {
+                            assert(!is_int($a));
+                        }
+                    }'
+            ]
         ];
     }