diff --git a/CMakeLists.txt b/CMakeLists.txt
index 52df6a5e..a49567e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ ENDIF(NOT OPENJPEG_NAMESPACE)
 # In all cases:
 STRING(TOLOWER ${OPENJPEG_NAMESPACE} OPENJPEG_LIBRARY_NAME)
 
-PROJECT(${JPEG_NAMESPACE} C)
+PROJECT(${OPENJPEG_NAMESPACE} C)
 
 # Do full dependency headers.
 INCLUDE_REGULAR_EXPRESSION("^.*$")