diff --git a/asm/assemble.c b/asm/assemble.c
index aa00eb8b..e24ebdb5 100644
--- a/asm/assemble.c
+++ b/asm/assemble.c
@@ -2440,6 +2440,9 @@ static enum match_result matches(const struct itemplate *itemp,
     case IF_GENBIT(IF_SZ):
         asize = BITS512;
         break;
+    case IF_GENBIT(IF_ANYSIZE):
+        asize = SIZE_MASK;
+        break;
     case IF_GENBIT(IF_SIZE):
         switch (bits) {
         case 16:
diff --git a/include/iflag.h b/include/iflag.h
index 7cf38eaa..a268c9bb 100644
--- a/include/iflag.h
+++ b/include/iflag.h
@@ -71,7 +71,7 @@ static inline int iflag_cmp(const iflag_t *a, const iflag_t *b)
 IF_GEN_HELPER(xor, ^)
 
 /* Some helpers which are to work with predefined masks */
-#define IF_SMASK        (IFM_SB|IFM_SW|IFM_SD|IFM_SQ|IFM_SO|IFM_SY|IFM_SZ|IFM_SIZE)
+#define IF_SMASK        (IFM_SB|IFM_SW|IFM_SD|IFM_SQ|IFM_SO|IFM_SY|IFM_SZ|IFM_SIZE|IFM_ANYSIZE)
 #define IF_ARMASK       (IFM_AR0|IFM_AR1|IFM_AR2|IFM_AR3|IFM_AR4)
 
 #define _itemp_smask(idx)      (insns_flags[(idx)].field[0] & IF_SMASK)
diff --git a/x86/iflags.ph b/x86/iflags.ph
index 723855c0..8f0a80fd 100644
--- a/x86/iflags.ph
+++ b/x86/iflags.ph
@@ -16,6 +16,7 @@ if_("SY",                "Unsized operands can't be non-yword");
 if_("SZ",                "Unsized operands can't be non-zword");
 if_("SIZE",              "Unsized operands must match the bitsize");
 if_("SX",                "Unsized operands not allowed");
+if_("ANYSIZE",           "Ignore operand size even if explicit");
 if_("AR0",               "SB, SW, SD applies to argument 0");
 if_("AR1",               "SB, SW, SD applies to argument 1");
 if_("AR2",               "SB, SW, SD applies to argument 2");
diff --git a/x86/insns.dat b/x86/insns.dat
index a35c807b..0f18e826 100644
--- a/x86/insns.dat
+++ b/x86/insns.dat
@@ -732,9 +732,12 @@ LAR		reg64,reg32			[rm:	o64 0f 02 /r]				X64,PROT
 LAR		reg64,reg64			[rm:	o64 0f 02 /r]				X64,PROT
 LDS		reg16,mem			[rm:	o16 c5 /r]				8086,NOLONG
 LDS		reg32,mem			[rm:	o32 c5 /r]				386,NOLONG
-LEA		reg16,mem			[rm:	o16 8d /r]				8086
-LEA		reg32,mem			[rm:	o32 8d /r]				386
-LEA		reg64,mem			[rm:	o64 8d /r]				X64
+LEA		reg16,mem			[rm:	o16 8d /r]				8086,ANYSIZE
+LEA		reg32,mem			[rm:	o32 8d /r]				386,ANYSIZE
+LEA		reg64,mem			[rm:	o64 8d /r]				X64,ANYSIZE
+LEA		reg16,imm			[rm:	o16 8d /r]				8086,ND,ANYSIZE
+LEA		reg32,imm			[rm:	o32 8d /r]				386,ND,ANYSIZE
+LEA		reg64,imm			[rm:	o64 8d /r]				X64,ND,ANYSIZE
 LEAVE		void				[	c9]					186
 LES		reg16,mem			[rm:	o16 c4 /r]				8086,NOLONG
 LES		reg32,mem			[rm:	o32 c4 /r]				386,NOLONG