diff --git a/ox-gfm.el b/ox-gfm.el
index 6c77a7d..a560eec 100644
--- a/ox-gfm.el
+++ b/ox-gfm.el
@@ -69,10 +69,13 @@
 
 ;;;; Paragraph
 
-(defun org-gfm-paragraph (paragraph contents _info)
+(defun org-gfm-paragraph (paragraph contents info)
   "Transcode PARAGRAPH element into Github Flavoured Markdown format.
 CONTENTS is the paragraph contents.  INFO is a plist used as a
 communication channel."
+  (unless (plist-get info :preserve-breaks)
+    (setq contents (concat (mapconcat 'identity (split-string contents) " ")
+                 "\n")))
   (let ((first-object (car (org-element-contents paragraph))))
     ;; If paragraph starts with a #, protect it.
     (if (and (stringp first-object) (string-match "\\`#" first-object))