diff --git a/icu4c/source/data/Makefile.in b/icu4c/source/data/Makefile.in
index 53a70f04c4..5da42f4e2d 100644
--- a/icu4c/source/data/Makefile.in
+++ b/icu4c/source/data/Makefile.in
@@ -284,8 +284,8 @@ $(BUILDDIR)/pnames.icu: $(UNICODEDATADIR)/PropertyAliases.txt $(UNICODEDATADIR)/
 	$(INVOKE) $(BINDIR)/genpname -d $(BUILDDIR)
 
 # unorm.icu
-$(BUILDDIR)/unorm.icu: $(UNICODEDATADIR)/UnicodeData.txt $(UNICODEDATADIR)/DerivedNormalizationProps.txt $(UNICODEDATADIR)/BidiMirroring.txt $(BINDIR)/gennorm$(EXEEXT) $(BUILDDIR)/$(ICUDT)uprops.icu
-	$(INVOKE) $(BINDIR)/gennorm -s $(UNICODEDATADIR) -d $(BUILDDIR) -u $(UNICODE_VERSION)
+$(BUILDDIR)/unorm.icu: $(UNICODEDATADIR)/UnicodeData.txt $(UNICODEDATADIR)/DerivedNormalizationProps.txt $(UNICODEDATADIR)/BidiMirroring.txt $(BINDIR)/gennorm$(EXEEXT) $(BUILDDIR)/$(ICUDT)pnames.icu $(BUILDDIR)/$(ICUDT)uprops.icu $(BUILDDIR)/$(ICUDT)ucase.icu
+	$(INVOKE) $(BINDIR)/gennorm -s $(UNICODEDATADIR) -i $(BUILDDIR) -d $(BUILDDIR) -u $(UNICODE_VERSION)
 
 # ucadata.icu
 $(BUILDDIR)/ucadata.icu $(BUILDDIR)/$(ICUDT)invuca.icu: $(UNICODEDATADIR)/FractionalUCA.txt $(BINDIR)/genuca$(EXEEXT) $(BUILDDIR)/$(ICUDT)unorm.icu $(BUILDDIR)/$(ICUDT)ucase.icu
diff --git a/icu4c/source/data/makedata.mak b/icu4c/source/data/makedata.mak
index ab833c4f8c..b8791390c4 100644
--- a/icu4c/source/data/makedata.mak
+++ b/icu4c/source/data/makedata.mak
@@ -506,9 +506,9 @@ res_index {
 	@"$(ICUTOOLS)\gencase\$(CFG)\gencase" -u $(UNICODE_VERSION) -i "$(ICUBLD)" -s "$(ICUUNIDATA)" -d "$(ICUBLD)"
 
 # Targets for unorm.icu
-"$(ICUBLD)\unorm.icu": "$(ICUUNIDATA)\*.txt" "$(ICUTOOLS)\gennorm\$(CFG)\gennorm.exe"
+"$(ICUBLD)\unorm.icu": "$(ICUUNIDATA)\*.txt" "$(ICUTOOLS)\gennorm\$(CFG)\gennorm.exe" "$(ICUBLD)\pnames.icu" "$(ICUBLD)\uprops.icu" "$(ICUBLD)\ucase.icu"
 	@echo Creating data file for Unicode Normalization
-	@"$(ICUTOOLS)\gennorm\$(CFG)\gennorm" -u $(UNICODE_VERSION) -d "$(ICUBLD)" -s "$(ICUUNIDATA)"
+	@"$(ICUTOOLS)\gennorm\$(CFG)\gennorm" -u $(UNICODE_VERSION) -d "$(ICUBLD)" -i "$(ICUBLD)" -s "$(ICUUNIDATA)"
 
 # Targets for converters
 "$(ICUBLD)\cnvalias.icu" : {"$(ICUSRCDATA)\$(ICUUCM)"}\convrtrs.txt "$(ICUTOOLS)\gencnval\$(CFG)\gencnval.exe"