diff --git a/Code/Mantid/docs/runsphinx.py.in b/Code/Mantid/docs/runsphinx.py.in
index fe2d50b7a84292a272cb2c930bbede595f453e92..bb6a822e80b1766d81927a35f0f6898e6559d4e2 100644
--- a/Code/Mantid/docs/runsphinx.py.in
+++ b/Code/Mantid/docs/runsphinx.py.in
@@ -6,6 +6,9 @@ import os
 import sys
 
 def main():
+    # Update path to find mantid
+    sys.path.insert(0, "@CMAKE_LIBRARY_OUTPUT_DIRECTORY@")
+
     # Update environment with screenshots path
     screenshots_dir = "@SCREENSHOTS_DIR@"
     if screenshots_dir != "":