diff --git a/libclc/generic/include/clc/math/tgamma.h b/libclc/generic/include/clc/math/tgamma.h
index a041d3219ac6..e17e0ffc1015 100644
--- a/libclc/generic/include/clc/math/tgamma.h
+++ b/libclc/generic/include/clc/math/tgamma.h
@@ -1,3 +1,7 @@
-#define __CLC_BODY <clc/math/tgamma.inc>
+#define __CLC_BODY <clc/math/unary_decl.inc>
+#define __CLC_FUNCTION tgamma
+
 #include <clc/math/gentype.inc>
+
 #undef __CLC_BODY
+#undef __CLC_FUNCTION
diff --git a/libclc/generic/include/clc/math/tgamma.inc b/libclc/generic/include/clc/math/tgamma.inc
deleted file mode 100644
index 9f67fe457fb1..000000000000
--- a/libclc/generic/include/clc/math/tgamma.inc
+++ /dev/null
@@ -1 +0,0 @@
-_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE tgamma(__CLC_GENTYPE a);