diff --git a/depends/packages/capnp.mk b/depends/packages/capnp.mk
index 2465c8091bb..8942c2b03cb 100644
--- a/depends/packages/capnp.mk
+++ b/depends/packages/capnp.mk
@@ -9,7 +9,7 @@ $(package)_sha256_hash=$(native_$(package)_sha256_hash)
 # setting in depends/config.site.in, which also hardcodes "lib".
 # Without this setting, cmake by default would use the OS library
 # directory, which might be "lib64" or something else, not "lib", on multiarch systems.
-define $(package)_set_vars :=
+define $(package)_set_vars
   $(package)_config_opts := -DBUILD_TESTING=OFF
   $(package)_config_opts += -DWITH_OPENSSL=OFF
   $(package)_config_opts += -DWITH_ZLIB=OFF
diff --git a/depends/packages/libmultiprocess.mk b/depends/packages/libmultiprocess.mk
index d237f52dbb2..3e47aaf3adc 100644
--- a/depends/packages/libmultiprocess.mk
+++ b/depends/packages/libmultiprocess.mk
@@ -12,7 +12,7 @@ endif
 # setting in depends/config.site.in, which also hardcodes "lib".
 # Without this setting, cmake by default would use the OS library
 # directory, which might be "lib64" or something else, not "lib", on multiarch systems.
-define $(package)_set_vars :=
+define $(package)_set_vars
 $(package)_config_opts += -DCMAKE_INSTALL_LIBDIR=lib/
 $(package)_config_opts += -DCMAKE_POSITION_INDEPENDENT_CODE=ON
 ifneq ($(host),$(build))