diff --git a/icu4c/source/i18n/udat.cpp b/icu4c/source/i18n/udat.cpp
index c2a53b136be..dcbd3caf61d 100644
--- a/icu4c/source/i18n/udat.cpp
+++ b/icu4c/source/i18n/udat.cpp
@@ -996,7 +996,7 @@ udat_getContext(const UDateFormat* fmt, UDisplayContextType type, UErrorCode* st
     if (U_FAILURE(*status)) {
         return (UDisplayContext)0;
     }
-    return ((DateFormat*)fmt)->getContext(type, *status);
+    return ((const DateFormat*)fmt)->getContext(type, *status);
 }
 
 
diff --git a/icu4c/source/i18n/unum.cpp b/icu4c/source/i18n/unum.cpp
index be19b823e56..7bb646f908f 100644
--- a/icu4c/source/i18n/unum.cpp
+++ b/icu4c/source/i18n/unum.cpp
@@ -800,7 +800,7 @@ unum_getContext(const UNumberFormat *fmt, UDisplayContextType type, UErrorCode*
     if (U_FAILURE(*status)) {
         return (UDisplayContext)0;
     }
-    return ((NumberFormat*)fmt)->getContext(type, *status);
+    return ((const NumberFormat*)fmt)->getContext(type, *status);
 }
 
 U_INTERNAL UFormattable * U_EXPORT2