diff --git a/package/flann/flann.mk b/package/flann/flann.mk
index 5b73881f86..dc9cd1af38 100644
--- a/package/flann/flann.mk
+++ b/package/flann/flann.mk
@@ -10,7 +10,6 @@ FLANN_INSTALL_STAGING = YES
 FLANN_LICENSE = BSD-3c
 FLANN_LICENSE_FILES = COPYING
 FLANN_CONF_OPT = \
-	-DCMAKE_BUILD_TYPE=Release \
 	-DBUILD_C_BINDINGS=ON \
 	-DBUILD_PYTHON_BINDINGS=OFF \
 	-DBUILD_MATLAB_BINDINGS=OFF \