--- a/src/interfaces/libpq/Makefile
+++ b/src/interfaces/libpq/Makefile
@@ -110,10 +110,7 @@ $(call add_to_list,PKG_CONFIG_REQUIRES_P
 endif
 
 ifeq ($(with_libcurl),yes)
-# libpq.so doesn't link against libcurl, but libpq.a needs libpq-oauth, and
-# libpq-oauth needs libcurl. Put both into *.private.
-$(call add_to_list,PKG_CONFIG_REQUIRES_PRIVATE,libcurl)
-%.pc: override SHLIB_LINK_INTERNAL += -lpq-oauth
+%.pc: override SHLIB_LINK_INTERNAL += -lpq-oauth -lcurl
 endif
 
 all: all-lib libpq-refs-stamp
