diff --git a/src/capi.zig b/src/capi.zig
index c4887c012..a463c0243 100644
--- a/src/capi.zig
+++ b/src/capi.zig
@@ -77,8 +77,10 @@ pub const asSymbolId = c.clAsSymbolId;
 pub fn asString(val: Value) []const u8 {
     return fromStr(c.clAsString(val));
 }
-pub const clTrue = c.clTrue;
-pub const clFalse = c.clFalse;
+pub const Void = c.CL_VOID;
+pub const True = c.CL_TRUE;
+pub const False = c.CL_FALSE;
+pub const bool_ = c.clBool;
 pub const asBoxInt = c.clAsBoxInt;
 pub const int = c.clInt;
 pub const asBool = c.clAsBool;
diff --git a/src/include/cyber.h b/src/include/cyber.h
index ba8027c60..e2fc69f01 100644
--- a/src/include/cyber.h
+++ b/src/include/cyber.h
@@ -23,6 +23,8 @@ typedef struct CLModule CLModule;
 
 #define CL_NULLID UINT32_MAX
 #define CL_VOID 0x7FFC000100000000
+#define CL_TRUE 0x7FFC000200000001
+#define CL_FALSE 0x7FFC000200000000
 #define CL_INTERRUPT 0x7ffc00030000ffff
 
 typedef int CLResultCode;
@@ -532,8 +534,6 @@ CLAllocator clGetAllocator(CLVM* vm);
 // -----------------------------------
 
 // Create values.
-CLValue clTrue(void);
-CLValue clFalse(void);
 CLValue clBool(bool b);
 
 CLValue clInt(int64_t n);   // Unboxed.
diff --git a/src/lib.zig b/src/lib.zig
index 775e6eb99..4be0a1014 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -892,8 +892,8 @@ test "clToBool()" {
     i = vm.newInt(1);
     try t.eq(c.toBool(i), true);
 
-    try t.eq(c.toBool(c.clTrue()), true);
-    try t.eq(c.toBool(c.clFalse()), false);
+    try t.eq(c.toBool(c.True), true);
+    try t.eq(c.toBool(c.False), false);
 }
 
 export fn clAsBool(val: Value) bool {
@@ -901,8 +901,8 @@ export fn clAsBool(val: Value) bool {
 }
 
 test "clAsBool()" {
-    try t.eq(c.asBool(c.clTrue()), true);
-    try t.eq(c.asBool(c.clFalse()), false);
+    try t.eq(c.asBool(c.True), true);
+    try t.eq(c.asBool(c.False), false);
 }
 
 export fn clAsBoxInt(val: Value) i64 {