diff --git a/icu4c/source/test/perf/unisetperf/draft/bitset.cpp b/icu4c/source/test/perf/unisetperf/draft/bitset.cpp
index 80ad773067d..12c824ce841 100644
--- a/icu4c/source/test/perf/unisetperf/draft/bitset.cpp
+++ b/icu4c/source/test/perf/unisetperf/draft/bitset.cpp
@@ -22,6 +22,9 @@
 *   Uses the original set for supplementary code points.
 */
 
+#include "unicode/uniset.h"
+#include "unicode/uobject.h"
+#include "unicode/usetiter.h"
 #include "unicode/utypes.h"
 #include "unicont.h"
 #include "cmemory.h" // for UPRV_LENGTHOF
@@ -175,7 +178,7 @@ public:
         latin1Set[6]=(uint32_t)bits[3];
         latin1Set[7]=(uint32_t)(bits[3]>>32);
 
-        restSet.remove(0, 0xffff);
+        restSet->remove(0, 0xffff);
     }
 
     ~BitSet() {
@@ -200,7 +203,7 @@ private:
     int64_t shortBits[32];
     int64_t *bits;
 
-    uint32_t latin1Bits[8];
+    uint32_t latin1Set[8];
 
     UnicodeSet *restSet;
 };
diff --git a/icu4c/source/test/perf/unisetperf/draft/trieset.cpp b/icu4c/source/test/perf/unisetperf/draft/trieset.cpp
index d46c872213a..e05458cc46a 100644
--- a/icu4c/source/test/perf/unisetperf/draft/trieset.cpp
+++ b/icu4c/source/test/perf/unisetperf/draft/trieset.cpp
@@ -21,8 +21,13 @@
 *   for supplementary code points.
 */
 
+#include "cmemory.h"
+#include "unicode/uniset.h"
+#include "unicode/uobject.h"
+#include "unicode/usetiter.h"
 #include "unicode/utypes.h"
 #include "unicont.h"
+#include "utrie.h"
 
 using icu::UObject;
 using icu::UnicodeSet;
@@ -93,7 +98,7 @@ public:
             latin1=UTRIE_GET8_LATIN1(&trie);
         }
 
-        restSet.remove(0, 0xffff);
+        restSet->remove(0, 0xffff);
     }
 
     ~TrieSet() {