diff --git a/sass/components/dropdown.sass b/sass/components/dropdown.sass
index b5200c3e..6a0eaeb7 100644
--- a/sass/components/dropdown.sass
+++ b/sass/components/dropdown.sass
@@ -29,7 +29,7 @@ $dropdown-divider-background-color: $border !default
     .dropdown-menu
       bottom: 100%
       padding-bottom: $dropdown-content-offset
-      padding-top: unset
+      padding-top: initial
       top: auto
 
 .dropdown-menu
diff --git a/sass/elements/form.sass b/sass/elements/form.sass
index 9820c89f..3efb3c52 100644
--- a/sass/elements/form.sass
+++ b/sass/elements/form.sass
@@ -119,7 +119,7 @@ $help-size: $size-small !default
     max-height: 600px
     min-height: 120px
   &[rows]
-    height: unset
+    height: initial
   // Modifiers
   &.has-fixed-size
     resize: none
@@ -173,7 +173,7 @@ $help-size: $size-small !default
     &:not([multiple])
       padding-right: 2.5em
     &[multiple]
-      height: unset
+      height: initial
       padding: 0
       option
         padding: 0.5em 1em