diff --git a/core/clang/mips.mk b/core/clang/mips.mk
index 1624b6fe1..08daf403a 100644
--- a/core/clang/mips.mk
+++ b/core/clang/mips.mk
@@ -7,14 +7,6 @@ CLANG_CONFIG_mips_EXTRA_LDFLAGS :=
 # Include common unknown flags
 CLANG_CONFIG_mips_UNKNOWN_CFLAGS := \
   $(CLANG_CONFIG_UNKNOWN_CFLAGS) \
-  -mips32 \
-  -mips32r2 \
-  -mips32r6 \
-  -mfp32 \
-  -mfp64 \
-  -mfpxx \
-  -modd-spreg \
-  -mno-odd-spreg \
   -fno-strict-volatile-bitfields \
   -fgcse-after-reload \
   -frerun-cse-after-loop \
diff --git a/core/clang/mips64.mk b/core/clang/mips64.mk
index a76aa08d9..612175c56 100644
--- a/core/clang/mips64.mk
+++ b/core/clang/mips64.mk
@@ -7,7 +7,6 @@ CLANG_CONFIG_mips64_EXTRA_LDFLAGS :=
 # Include common unknown flags
 CLANG_CONFIG_mips64_UNKNOWN_CFLAGS := \
   $(CLANG_CONFIG_UNKNOWN_CFLAGS) \
-  -mips64r6 \
   -fno-strict-volatile-bitfields \
   -fgcse-after-reload \
   -frerun-cse-after-loop \