diff --git a/regressions/ck_barrier/benchmark/throughput.c b/regressions/ck_barrier/benchmark/throughput.c
index 3d4ffc6..4710250 100644
--- a/regressions/ck_barrier/benchmark/throughput.c
+++ b/regressions/ck_barrier/benchmark/throughput.c
@@ -36,6 +36,7 @@
 
 #include "../../common.h"
 
+#if defined(CK_F_PR_INC_64) && defined(CK_F_PR_LOAD_64)
 static int done = 0;
 static struct affinity a;
 static int nthr;
@@ -128,4 +129,13 @@ main(int argc, char *argv[])
 
 	return (0);
 }
+#else
+int
+main(void)
+{
+
+	fputs("Unsupported.", stderr);
+	return 0;
+}
+#endif
 
diff --git a/regressions/ck_pr/benchmark/ck_pr_cas_64.c b/regressions/ck_pr/benchmark/ck_pr_cas_64.c
index 33f6761..90dcb64 100644
--- a/regressions/ck_pr/benchmark/ck_pr_cas_64.c
+++ b/regressions/ck_pr/benchmark/ck_pr_cas_64.c
@@ -9,7 +9,7 @@
 #include <stdlib.h>
 
 int
-main(int void)
+main(void)
 {
 	exit(EXIT_FAILURE);
 }
diff --git a/regressions/ck_sequence/validate/ck_sequence.c b/regressions/ck_sequence/validate/ck_sequence.c
index 9c0f481..0316e5a 100644
--- a/regressions/ck_sequence/validate/ck_sequence.c
+++ b/regressions/ck_sequence/validate/ck_sequence.c
@@ -38,9 +38,9 @@
 #endif
 
 struct example {
-        uint64_t a;
-        uint64_t b;
-        uint64_t c;
+        unsigned int a;
+        unsigned int b;
+        unsigned int c;
 };
 
 static struct example global CK_CC_CACHELINE;
@@ -136,8 +136,8 @@ main(int argc, char *argv[])
                  */
                 ck_sequence_write_begin(&seqlock);
                 global.a = counter++;
-                ck_pr_store_64(&global.b, global.a + 1000);
-                ck_pr_store_64(&global.c, global.b + global.a);
+                ck_pr_store_uint(&global.b, global.a + 1000);
+                ck_pr_store_uint(&global.c, global.b + global.a);
                 ck_sequence_write_end(&seqlock);
 
 		if (counter == 1)