diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1f0cc2b57..a08aa393b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -321,7 +321,6 @@ ELSE (ASSIMP_BUILD_NONFREE_C4D_IMPORTER)
   ADD_DEFINITIONS( -DASSIMP_BUILD_NO_C4D_IMPORTER )
 ENDIF (ASSIMP_BUILD_NONFREE_C4D_IMPORTER)
 
-
 ADD_SUBDIRECTORY( code/ )
 IF ( ASSIMP_BUILD_ASSIMP_TOOLS )
   IF ( WIN32 )
diff --git a/include/assimp/cimport.h b/include/assimp/cimport.h
index 231230ca8..6d3fa4aea 100644
--- a/include/assimp/cimport.h
+++ b/include/assimp/cimport.h
@@ -337,7 +337,7 @@ ASSIMP_API void aiReleaseImport(
  * import process. NULL if there was no error. There can't be an error if you
  * got a non-NULL #aiScene from #aiImportFile/#aiImportFileEx/#aiApplyPostProcessing.
  */
-ASSIMP_API const char* aiGetErrorString();
+ASSIMP_API const char* aiGetErrorString(void);
 
 // --------------------------------------------------------------------------------
 /** Returns whether a given file extension is supported by ASSIMP