diff --git a/Utilities/KWIML/vtkkwiml/include/kwiml/abi.h b/Utilities/KWIML/vtkkwiml/include/kwiml/abi.h
index 546bacd0..b188f8f2 100644
--- a/Utilities/KWIML/vtkkwiml/include/kwiml/abi.h
+++ b/Utilities/KWIML/vtkkwiml/include/kwiml/abi.h
@@ -471,6 +471,10 @@ suppression macro KWIML_ABI_NO_VERIFY was defined.
 #elif defined(__riscv__)
 # define KWIML_ABI_ENDIAN_ID KWIML_ABI_ENDIAN_ID_LITTLE
 
+/* RISC-V */
+#elif defined(__riscv)
+# define KWIML_ABI_ENDIAN_ID KWIML_ABI_ENDIAN_ID_LITTLE
+
 /* Unknown CPU */
 #elif !defined(KWIML_ABI_NO_ERROR_ENDIAN)
 # error "Byte order of target CPU unknown."
diff --git a/Wrapping/Tools/vtkParsePreprocess.c b/Wrapping/Tools/vtkParsePreprocess.c
index 539a953f..8d92db95 100644
--- a/Wrapping/Tools/vtkParsePreprocess.c
+++ b/Wrapping/Tools/vtkParsePreprocess.c
@@ -2705,6 +2705,9 @@ void vtkParsePreprocess_AddStandardMacros(
 #ifdef __xtensa__
     PREPROC_ADD_MACRO(info, __xtensa__);
 #endif
+#ifdef __riscv
+    PREPROC_ADD_MACRO(info, __riscv);
+#endif
 
     /*------------------------------
      * compiler macros