diff --git a/icu4c/source/samples/defs.mk b/icu4c/source/samples/defs.mk
index bbfce88ec73..b7677a94f1f 100644
--- a/icu4c/source/samples/defs.mk
+++ b/icu4c/source/samples/defs.mk
@@ -11,7 +11,7 @@ CPPFLAGS=$(shell icu-config --cppflags)
 CFLAGS=$(shell icu-config --cflags)
 CXXFLAGS=$(shell icu-config --cxxflags)
 LDFLAGS =$(shell icu-config --ldflags)
-LDFLAGS_USTDIO =$(shell icu-config --ldflags-ustdio)
+LDFLAGS_USTDIO =$(shell icu-config --ldflags-icuio)
 INVOKE=$(shell icu-config --invoke)
 GENRB=$(shell icu-config --invoke=genrb)
 GENRBOPT=--package-name $(RESNAME)
diff --git a/icu4c/source/samples/uresb/Makefile b/icu4c/source/samples/uresb/Makefile
index 388a5a40f99..43120e15e93 100644
--- a/icu4c/source/samples/uresb/Makefile
+++ b/icu4c/source/samples/uresb/Makefile
@@ -39,7 +39,7 @@ $(ICU_PATH)/source/tools/toolutil/uoptions.h:
 	@false
 
 CPPFLAGS += -I$(ICU_PATH)/source/tools/toolutil
-LDFLAGS += -L$(ICU_PATH)/source/tools/toolutil $(shell icu-config --ldflags-toolutil --ldflags-ustdio)
+LDFLAGS += -L$(ICU_PATH)/source/tools/toolutil $(shell icu-config --ldflags-toolutil --ldflags-icuio)
 
 .PHONY: all clean distclean check report