diff --git a/RepositoryExternal.mk b/RepositoryExternal.mk
index 08afde3b50b1..6fa5c82f108e 100644
--- a/RepositoryExternal.mk
+++ b/RepositoryExternal.mk
@@ -84,7 +84,7 @@ ifeq ($(SYSTEM_NPAPI_HEADERS),YES)
 define gb_LinkTarget__use_npapi_headers
 $(call gb_LinkTarget_set_include,$(1),\
 	$(NPAPI_HEADERS_CFLAGS) \
-	-I$(SRCDIR)/np_sdk \
+	-I$(SRCDIR)/external/np_sdk \
 	$$(INCLUDE) \
 )
 
@@ -94,8 +94,8 @@ else #!SYSTEM_NPAPI_HEADERS
 
 define gb_LinkTarget__use_npapi_headers
 $(call gb_LinkTarget_set_include,$(1),\
-	-I$(SRCDIR)/np_sdk/inc \
-	-I$(SRCDIR)/np_sdk \
+	-I$(SRCDIR)/external/np_sdk/inc \
+	-I$(SRCDIR)/external/np_sdk \
 	$$(INCLUDE) \
 )
 
diff --git a/RepositoryModule_host.mk b/RepositoryModule_host.mk
index 85223e09c9fd..fb7268d24bb5 100644
--- a/RepositoryModule_host.mk
+++ b/RepositoryModule_host.mk
@@ -76,7 +76,6 @@ $(eval $(call gb_Module_add_moduledirs,libreoffice,\
 	$(call gb_Helper_optional,DESKTOP,l10ntools) \
 	$(call gb_Helper_optional,MARIADBC,mysqlc) \
 	$(call gb_Helper_optional,NLPSOLVER,nlpsolver) \
-	np_sdk \
 	o3tl \
 	$(call gb_Helper_optional,ODK,odk) \
 	offapi \
diff --git a/external/Module_external.mk b/external/Module_external.mk
index 4633be319c54..f0fae3eca5e5 100644
--- a/external/Module_external.mk
+++ b/external/Module_external.mk
@@ -18,6 +18,7 @@ $(eval $(call gb_Module_add_moduledir,external,msc-externals))
 endif
 
 $(eval $(call gb_Module_add_moduledirs,external,\
+	np_sdk \
 	$(call gb_Helper_optional,AFMS,afms) \
 	$(call gb_Helper_optional,APACHE_COMMONS,apache-commons) \
 	$(call gb_Helper_optional,BOOST,boost) \
diff --git a/np_sdk/Makefile b/external/np_sdk/Makefile
similarity index 71%
rename from np_sdk/Makefile
rename to external/np_sdk/Makefile
index ccb1c85a04da..e4968cf85fb6 100644
--- a/np_sdk/Makefile
+++ b/external/np_sdk/Makefile
@@ -2,6 +2,6 @@
 
 module_directory:=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))
 
-include $(module_directory)/../solenv/gbuild/partial_build.mk
+include $(module_directory)/../../solenv/gbuild/partial_build.mk
 
 # vim: set noet sw=4 ts=4:
diff --git a/np_sdk/Module_np_sdk.mk b/external/np_sdk/Module_np_sdk.mk
similarity index 100%
rename from np_sdk/Module_np_sdk.mk
rename to external/np_sdk/Module_np_sdk.mk
diff --git a/np_sdk/README b/external/np_sdk/README
similarity index 100%
rename from np_sdk/README
rename to external/np_sdk/README
diff --git a/np_sdk/StaticLibrary_nputils.mk b/external/np_sdk/StaticLibrary_nputils.mk
similarity index 92%
rename from np_sdk/StaticLibrary_nputils.mk
rename to external/np_sdk/StaticLibrary_nputils.mk
index 3ff331475e2b..bbbd66db32e0 100644
--- a/np_sdk/StaticLibrary_nputils.mk
+++ b/external/np_sdk/StaticLibrary_nputils.mk
@@ -22,11 +22,11 @@ endif
 
 ifeq ($(OS),WNT)
 $(eval $(call gb_StaticLibrary_add_exception_objects,nputils,\
-	np_sdk/npsdk/npwin \
+	external/np_sdk/npsdk/npwin \
 ))
 else
 $(eval $(call gb_StaticLibrary_add_cobjects,nputils,\
-	np_sdk/npsdk/npunix \
+	external/np_sdk/npsdk/npunix \
 ))
 endif
 
diff --git a/np_sdk/inc/LEGAL b/external/np_sdk/inc/LEGAL
similarity index 100%
rename from np_sdk/inc/LEGAL
rename to external/np_sdk/inc/LEGAL
diff --git a/np_sdk/inc/LICENSE b/external/np_sdk/inc/LICENSE
similarity index 100%
rename from np_sdk/inc/LICENSE
rename to external/np_sdk/inc/LICENSE
diff --git a/np_sdk/inc/npapi.h b/external/np_sdk/inc/npapi.h
similarity index 100%
rename from np_sdk/inc/npapi.h
rename to external/np_sdk/inc/npapi.h
diff --git a/np_sdk/inc/npfunctions.h b/external/np_sdk/inc/npfunctions.h
similarity index 100%
rename from np_sdk/inc/npfunctions.h
rename to external/np_sdk/inc/npfunctions.h
diff --git a/np_sdk/inc/npruntime.h b/external/np_sdk/inc/npruntime.h
similarity index 100%
rename from np_sdk/inc/npruntime.h
rename to external/np_sdk/inc/npruntime.h
diff --git a/np_sdk/inc/nptypes.h b/external/np_sdk/inc/nptypes.h
similarity index 100%
rename from np_sdk/inc/nptypes.h
rename to external/np_sdk/inc/nptypes.h
diff --git a/np_sdk/npsdk/LEGAL b/external/np_sdk/npsdk/LEGAL
similarity index 100%
rename from np_sdk/npsdk/LEGAL
rename to external/np_sdk/npsdk/LEGAL
diff --git a/np_sdk/npsdk/LICENSE b/external/np_sdk/npsdk/LICENSE
similarity index 100%
rename from np_sdk/npsdk/LICENSE
rename to external/np_sdk/npsdk/LICENSE
diff --git a/np_sdk/npsdk/README b/external/np_sdk/npsdk/README
similarity index 100%
rename from np_sdk/npsdk/README
rename to external/np_sdk/npsdk/README
diff --git a/np_sdk/npsdk/jri.h b/external/np_sdk/npsdk/jri.h
similarity index 100%
rename from np_sdk/npsdk/jri.h
rename to external/np_sdk/npsdk/jri.h
diff --git a/np_sdk/npsdk/jri_md.h b/external/np_sdk/npsdk/jri_md.h
similarity index 100%
rename from np_sdk/npsdk/jri_md.h
rename to external/np_sdk/npsdk/jri_md.h
diff --git a/np_sdk/npsdk/jritypes.h b/external/np_sdk/npsdk/jritypes.h
similarity index 100%
rename from np_sdk/npsdk/jritypes.h
rename to external/np_sdk/npsdk/jritypes.h
diff --git a/np_sdk/npsdk/npunix.c b/external/np_sdk/npsdk/npunix.c
similarity index 100%
rename from np_sdk/npsdk/npunix.c
rename to external/np_sdk/npsdk/npunix.c
diff --git a/np_sdk/npsdk/npupp.h b/external/np_sdk/npsdk/npupp.h
similarity index 100%
rename from np_sdk/npsdk/npupp.h
rename to external/np_sdk/npsdk/npupp.h
diff --git a/np_sdk/npsdk/npwin.cxx b/external/np_sdk/npsdk/npwin.cxx
similarity index 100%
rename from np_sdk/npsdk/npwin.cxx
rename to external/np_sdk/npsdk/npwin.cxx
diff --git a/np_sdk/npsdk/plugin.h b/external/np_sdk/npsdk/plugin.h
similarity index 93%
rename from np_sdk/npsdk/plugin.h
rename to external/np_sdk/npsdk/plugin.h
index ec0dc040538c..6f7913b5f6a5 100644
--- a/np_sdk/npsdk/plugin.h
+++ b/external/np_sdk/npsdk/plugin.h
@@ -23,7 +23,7 @@
 #include "npapi.h"
 
 /* OpenOffice.org/LibreOffice modified the implementations of NP_Initialize and
-   NP_Shutdown in np_sdk/npsdk/ to call NPP_Initialize and NPP_Shutdown, resp.,
+   NP_Shutdown in external/np_sdk/npsdk/ to call NPP_Initialize and NPP_Shutdown, resp.,
    defined in extensions/source/nsplugin/source/npshell.cxx:
 */