diff --git a/repos/libports/lib/import/import-jitterentropy.mk b/repos/libports/lib/import/import-jitterentropy.mk
index 847f4fd68e..a0b5140527 100644
--- a/repos/libports/lib/import/import-jitterentropy.mk
+++ b/repos/libports/lib/import/import-jitterentropy.mk
@@ -8,7 +8,12 @@ else ifeq ($(filter-out $(SPECS),arm_v7),)
 	TARGET_CPUARCH=arm_v7
 endif
 
+ifeq ($(CONTRIB_DIR),)
+REP_INC_DIR += include/jitterentropy
+else
 INC_DIR += $(call select_from_ports,jitterentropy)/include/jitterentropy
+endif
+
 INC_DIR += $(call select_from_repositories,src/lib/jitterentropy)
 INC_DIR += $(call select_from_repositories,src/lib/jitterentropy/spec/$(TARGET_CPUARCH))
 
diff --git a/repos/libports/recipes/api/jitterentropy/content.mk b/repos/libports/recipes/api/jitterentropy/content.mk
new file mode 100644
index 0000000000..0567c222fe
--- /dev/null
+++ b/repos/libports/recipes/api/jitterentropy/content.mk
@@ -0,0 +1,25 @@
+MIRROR_FROM_REP_DIR := lib/mk/jitterentropy.inc \
+                       lib/import/import-jitterentropy.mk \
+                       $(foreach SPEC,arm_v6 arm_v7 x86_32 x86_64,\
+                         lib/mk/spec/$(SPEC)/jitterentropy.mk) \
+                       src/lib/jitterentropy
+
+PORT_DIR := $(call port_dir,$(REP_DIR)/ports/jitterentropy)
+MIRROR_FROM_PORT_DIR := src/lib/jitterentropy/jitterentropy-base.c \
+                        include/jitterentropy/jitterentropy.h
+
+content: $(MIRROR_FROM_REP_DIR) $(MIRROR_FROM_PORT_DIR) LICENSE
+
+$(MIRROR_FROM_PORT_DIR):
+	mkdir -p $(dir $@)
+	cp -r $(PORT_DIR)/$@ $@
+
+$(MIRROR_FROM_REP_DIR):
+	$(mirror_from_rep_dir)
+
+LICENSE:
+	( echo "The contrib sources"; \
+	  echo "  include/jitterentropy/jitterentropy.h"; \
+	  echo "  src/lib/jitterentropy/jitterentropy-base.c"; \
+	  echo "by Stephan Mueller are licensed under a BSD-style license (please"; \
+	  echo "see the corresponding copyright header in the files)." ) > $@
diff --git a/repos/libports/recipes/api/jitterentropy/hash b/repos/libports/recipes/api/jitterentropy/hash
new file mode 100644
index 0000000000..2d95e50fb4
--- /dev/null
+++ b/repos/libports/recipes/api/jitterentropy/hash
@@ -0,0 +1 @@
+2018-05-18 f226ebc41dc260f4b3506870061d6f67c1fa34ec
diff --git a/repos/libports/recipes/src/vfs_jitterentropy/content.mk b/repos/libports/recipes/src/vfs_jitterentropy/content.mk
index be4dd39e1e..dcc9e131f0 100644
--- a/repos/libports/recipes/src/vfs_jitterentropy/content.mk
+++ b/repos/libports/recipes/src/vfs_jitterentropy/content.mk
@@ -1,29 +1,9 @@
-MIRROR_FROM_REP_DIR := lib/mk/jitterentropy.inc \
-                       lib/import/import-jitterentropy.mk \
-                       $(foreach SPEC,arm_v6 arm_v7 x86_32 x86_64,\
-                         lib/mk/spec/$(SPEC)/jitterentropy.mk) \
-                       src/lib/jitterentropy \
-                       lib/mk/vfs_jitterentropy.mk src/lib/vfs/jitterentropy
+MIRROR_FROM_REP_DIR := lib/mk/vfs_jitterentropy.mk src/lib/vfs/jitterentropy
 
-PORT_DIR := $(call port_dir,$(REP_DIR)/ports/jitterentropy)
-MIRROR_FROM_PORT_DIR := src/lib/jitterentropy/jitterentropy-base.c \
-                        include/jitterentropy/jitterentropy.h
-
-content: $(MIRROR_FROM_REP_DIR) $(MIRROR_FROM_PORT_DIR) LICENSE
-
-$(MIRROR_FROM_PORT_DIR):
-	mkdir -p $(dir $@)
-	cp -r $(PORT_DIR)/$@ $@
+content: $(MIRROR_FROM_REP_DIR) LICENSE
 
 $(MIRROR_FROM_REP_DIR):
 	$(mirror_from_rep_dir)
 
 LICENSE:
-	( echo "The contrib sources"; \
-	  echo "  include/jitterentropy/jitterentropy.h"; \
-	  echo "  src/lib/jitterentropy/jitterentropy-base.c"; \
-	  echo "by Stephan Mueller are licensed under a BSD-style license (please"; \
-	  echo "see the corresponding copyright header in the files)."; \
-	  echo ; \
-	  echo "The remaining source files are subject to the Genode license: "; \
-	  cat $(GENODE_DIR)/LICENSE; ) > $@
+	cp $(GENODE_DIR)/LICENSE $@
diff --git a/repos/libports/recipes/src/vfs_jitterentropy/used_apis b/repos/libports/recipes/src/vfs_jitterentropy/used_apis
index 81d3f4c012..9593aa9496 100644
--- a/repos/libports/recipes/src/vfs_jitterentropy/used_apis
+++ b/repos/libports/recipes/src/vfs_jitterentropy/used_apis
@@ -3,3 +3,4 @@ os
 so
 libc
 vfs
+jitterentropy