diff --git a/ui/scss/component/_form-field.scss b/ui/scss/component/_form-field.scss
index 4a8b52c8f..75234d2ae 100644
--- a/ui/scss/component/_form-field.scss
+++ b/ui/scss/component/_form-field.scss
@@ -484,7 +484,15 @@ fieldset-section {
 
 .react-datetime-picker__button {
   svg {
-    stroke: var(--color-gray-5);
+    stroke: var(--color-black);
+  }
+}
+
+[theme='dark'] {
+  .react-datetime-picker__button {
+    svg {
+      stroke: var(--color-white);
+    }
   }
 }