diff --git a/Makefile.in b/Makefile.in
index 9e43e5ed..a3be7e71 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -241,10 +242,10 @@ ifeq (1,@HAVE_LIBCHOLMOD@)
 	  LDLIBS     += -lsuitesparseconfig
 	endif
 endif
-ifeq (1,@HAVE_DCMTK@)
+ifeq (1,@HAVE_DCMTK_DISABLE@)
 	DEFINES      += -D=WITH_DCMTK
 	LDLIBS       += -ldcmdata -loflog -lofstd
	SOURCES      += t210/sopen_dcmtk_read.cpp
 	OBJECTS      += sopen_dcmtk_read.o
 	MinGWOBJECTS += win32/sopen_dcmtk_read.obj
 endif