diff --git a/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/fix-makefile-mod.patch b/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/fix-makefile-mod.patch
new file mode 100644
index 00000000..bc6fbb27
--- /dev/null
+++ b/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/fix-makefile-mod.patch
@@ -0,0 +1,43 @@
+diff --git a/makefile_mod.vc b/makefile_mod.vc
+index 4815377..dbdbede 100644
+--- a/makefile_mod.vc
++++ b/makefile_mod.vc
+@@ -93,7 +93,7 @@ LIBOBJ = src\gaiaaux\gg_sqlaux.obj src\gaiaaux\gg_utf8.obj \
+ MOD_SPATIALITE_DLL = mod_spatialite$(VERSION).dll
+ 
+ CFLAGS = /nologo -I.\src\headers -I.\src\topology \
+-	-I. -IC:\OSGeo4W\include $(OPTFLAGS)
++	-I. $(OPTFLAGS)
+ 
+ default:	all
+ 
+@@ -107,12 +107,9 @@ mod_spatialite.lib:	$(LIBOBJ)
+ $(MOD_SPATIALITE_DLL):	mod_spatialite_i.lib
+ 
+ mod_spatialite_i.lib:     $(LIBOBJ)
+-	link /dll /out:$(MOD_SPATIALITE_DLL) \
++	link $(LINK_FLAGS) /dll /out:$(MOD_SPATIALITE_DLL) \
+ 		/implib:mod_spatialite_i.lib $(LIBOBJ) \
+-		C:\OSGeo4W\lib\proj_i.lib C:\OSGeo4W\lib\geos_c.lib \
+-		C:\OSGeo4w\lib\freexl_i.lib C:\OSGeo4w\lib\iconv.lib \
+-		C:\OSGeo4W\lib\sqlite3_i.lib C:\OSGeo4W\lib\zlib.lib \
+-		C:\OSGeo4W\lib\libxml2.lib C:\OSGeo4W\lib\librttopo.lib
++		$(LIBS_ALL)
+ 	if exist $(MOD_SPATIALITE_DLL).manifest mt -manifest \
+ 		$(MOD_SPATIALITE_DLL).manifest -outputresource:$(MOD_SPATIALITE_DLL);2
+ 		
+diff --git a/nmake_mod.opt b/nmake_mod.opt
+index 7772853..df6ec25 100644
+--- a/nmake_mod.opt
++++ b/nmake_mod.opt
+@@ -1,8 +1,8 @@
+ # Directory tree where SpatiaLite will be installed.
+-INSTDIR=C:\OSGeo4W
++INSTDIR=$(INST_DIR)
+ 
+ # Uncomment the first for an optimized build, or the second for debug.
+-OPTFLAGS=	/nologo /Ox /fp:precise /W4 /MD /D_CRT_SECURE_NO_WARNINGS \
++OPTFLAGS=	/nologo /fp:precise /W4 $(CL_FLAGS) /D_CRT_SECURE_NO_WARNINGS \
+ 		/DDLL_EXPORT /DLOADABLE_EXTENSION /DYY_NO_UNISTD_H
+ #OPTFLAGS=	/nologo /Zi /MD /Fdmod_spatialite.pdb /DDLL_EXPORT
+ 
diff --git a/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/ok-load-permanently.patch b/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/ok-load-permanently.patch
new file mode 100644
index 00000000..81c33b7e
--- /dev/null
+++ b/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/ok-load-permanently.patch
@@ -0,0 +1,13 @@
+diff --git a/src/spatialite/spatialite.c b/src/spatialite/spatialite.c
+index 9d6063d..f3dda37 100644
+--- a/src/spatialite/spatialite.c
++++ b/src/spatialite/spatialite.c
+@@ -53439,7 +53439,7 @@ init_spatialite_extension (sqlite3 * db, char **pzErrMsg,
+ /* setting a timeout handler */
+     sqlite3_busy_timeout (db, 5000);
+ 
+-    return 0;
++    return SQLITE_OK_LOAD_PERMANENTLY;
+ }
+ #endif
+ 
diff --git a/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/portfile.cmake b/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/portfile.cmake
index 05dbe871..6f7aea20 100644
--- a/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/portfile.cmake
+++ b/vcpkg-vendor/vcpkg-overlay-ports/libspatialite/portfile.cmake
@@ -9,10 +9,12 @@ vcpkg_extract_source_archive(
     ARCHIVE "${ARCHIVE}"
     PATCHES
         fix-makefiles.patch
+        fix-makefile-mod.patch
         fix-linux-configure.patch
         gaiaconfig-msvc.patch
         fix-mingw.patch
         fix-utf8-source.patch
+        ok-load-permanently.patch
 )
 
 vcpkg_check_features(OUT_FEATURE_OPTIONS unused
@@ -95,6 +97,22 @@ if(VCPKG_TARGET_IS_WINDOWS AND NOT VCPKG_TARGET_IS_MINGW)
             "LINK_FLAGS=/debug"
     )
 
+    vcpkg_install_nmake(
+        SOURCE_PATH "${SOURCE_PATH}"
+        PROJECT_NAME makefile_mod.vc
+        PREFER_JOM
+        CL_LANGUAGE C
+        OPTIONS_RELEASE
+            "CL_FLAGS=${CL_FLAGS_RELEASE}"
+            "INST_DIR=${INST_DIR}"
+            "LIBS_ALL=${LIBS_ALL_RELEASE}"
+        OPTIONS_DEBUG
+            "CL_FLAGS=${CL_FLAGS_DEBUG}"
+            "INST_DIR=${INST_DIR}\\debug"
+            "LIBS_ALL=${LIBS_ALL_DEBUG}"
+            "LINK_FLAGS=/debug"
+    )
+
     vcpkg_copy_pdbs()
 
     file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")