diff --git a/icu4c/source/i18n/gregoimp.cpp b/icu4c/source/i18n/gregoimp.cpp
index ee2df87bf3e..33c4ddeff2f 100644
--- a/icu4c/source/i18n/gregoimp.cpp
+++ b/icu4c/source/i18n/gregoimp.cpp
@@ -9,6 +9,9 @@
 **********************************************************************
 */
 #include "gregoimp.h"
+
+#if !UCONFIG_NO_FORMATTING
+
 #include "unicode/ucal.h"
 
 int32_t Math::floorDivide(int32_t numerator, int32_t denominator) {
@@ -84,4 +87,5 @@ void Grego::dayToFields(double day, int32_t& year, int32_t& month,
     doy++; // one-based doy
 }
 
+#endif
 //eof
diff --git a/icu4c/source/tools/gensprep/gensprep.c b/icu4c/source/tools/gensprep/gensprep.c
index f0d7e4158fc..42fe6981db3 100644
--- a/icu4c/source/tools/gensprep/gensprep.c
+++ b/icu4c/source/tools/gensprep/gensprep.c
@@ -187,7 +187,7 @@ main(int argc, char* argv[]) {
 #if UCONFIG_NO_IDNA
 
     fprintf(stderr,
-        "gensprep writes dummy " U_ICUDATA_NAME "_" _SPREP_DATA_NAME "." DATA_TYPE
+        "gensprep writes dummy " U_ICUDATA_NAME "_" DATA_NAME "." DATA_TYPE
         " because UCONFIG_NO_IDNA is set, \n"
         "see icu/source/common/unicode/uconfig.h\n");
     generateData(destDir);