diff --git a/cmake/modules/modules/FindDjVuLibre.cmake b/cmake/modules/modules/FindDjVuLibre.cmake
index 644f82f13..477b324fa 100644
--- a/cmake/modules/modules/FindDjVuLibre.cmake
+++ b/cmake/modules/modules/FindDjVuLibre.cmake
@@ -16,20 +16,22 @@ else (DJVULIBRE_INCLUDE_DIR AND DJVULIBRE_LIBRARY)
 
   pkgconfig(ddjvuapi _ddjvuIncDir _ddjvuLinkDir ddjvuLinkFlags _ddjvuCflags)
 
-  find_path(DJVULIBRE_INCLUDE_DIR libdjvu/ddjvuapi.h
-    ${_ddjvuIncDir}
-    /usr/local/include
-    /usr/include
-    ${GNUWIN32_DIR}/include
-  )
-
-  find_library(DJVULIBRE_LIBRARY NAMES djvulibre
-    PATHS
-    ${_ddjvuLinkDir}
-    /usr/lib
-    /usr/local/lib
-    ${GNUWIN32_DIR}/lib
-  )
+  if(_ddjvuIncDir)
+    find_path(DJVULIBRE_INCLUDE_DIR libdjvu/ddjvuapi.h
+      ${_ddjvuIncDir}
+      /usr/local/include
+      /usr/include
+      ${GNUWIN32_DIR}/include
+    )
+
+    find_library(DJVULIBRE_LIBRARY NAMES djvulibre
+      PATHS
+      ${_ddjvuLinkDir}
+      /usr/lib
+      /usr/local/lib
+      ${GNUWIN32_DIR}/lib
+    )
+  endif(_ddjvuIncDir)
 
   if(DJVULIBRE_INCLUDE_DIR AND DJVULIBRE_LIBRARY)
     set(DJVULIBRE_FOUND TRUE)