diff --git a/colors/onedark.vim b/colors/onedark.vim
index 15c2565..f92739e 100644
--- a/colors/onedark.vim
+++ b/colors/onedark.vim
@@ -70,11 +70,16 @@ if !exists("g:onedark_terminal_italics")
   let g:onedark_terminal_italics = 0
 endif
 
-" This function was borrowed from FlatColor: https://github.com/MaxSt/FlatColor/
-" It was based on one found in hemisu: https://github.com/noahfrederick/vim-hemisu/
+" This function is based on one from FlatColor: https://github.com/MaxSt/FlatColor/
+" Which in turn was based on one found in hemisu: https://github.com/noahfrederick/vim-hemisu/
 function! s:h(group, style)
-  if g:onedark_terminal_italics == 0 && has_key(a:style, "cterm") && a:style["cterm"] == "italic"
-    unlet a:style.cterm
+  if g:onedark_terminal_italics == 0
+    if has_key(a:style, "cterm") && a:style["cterm"] == "italic"
+      unlet a:style.cterm
+    endif
+    if has_key(a:style, "gui") && a:style["gui"] == "italic"
+      unlet a:style.gui
+    endif
   endif
   if g:onedark_termcolors == 16
     let l:ctermfg = (has_key(a:style, "fg") ? a:style.fg.cterm16 : "NONE")
@@ -82,7 +87,7 @@ function! s:h(group, style)
   else
     let l:ctermfg = (has_key(a:style, "fg") ? a:style.fg.cterm : "NONE")
     let l:ctermbg = (has_key(a:style, "bg") ? a:style.bg.cterm : "NONE")
-  end
+  endif
   execute "highlight" a:group
     \ "guifg="   (has_key(a:style, "fg")    ? a:style.fg.gui   : "NONE")
     \ "guibg="   (has_key(a:style, "bg")    ? a:style.bg.gui   : "NONE")