diff --git a/libr/asm/p/asm_x86_cs.c b/libr/asm/p/asm_x86_cs.c
index e61de39802..eaee7ed2b6 100644
--- a/libr/asm/p/asm_x86_cs.c
+++ b/libr/asm/p/asm_x86_cs.c
@@ -56,6 +56,9 @@ static int disassemble(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
 	} else {
 		cs_option (cd, CS_OPT_DETAIL, CS_OPT_OFF);
 	}
+	// always unsigned immediates (kernel addresses)
+	// maybe r2 should have an option for this too?
+	cs_option (cd, CS_OPT_UNSIGNED, CS_OPT_ON);
 	if (a->syntax == R_ASM_SYNTAX_MASM) {
 #if CS_API_MAJOR >= 4
 		cs_option (cd, CS_OPT_SYNTAX, CS_OPT_SYNTAX_MASM);
diff --git a/shlr/capstone-patches/honor-unsigned.patch b/shlr/capstone-patches/honor-unsigned.patch
new file mode 100644
index 0000000000..d3506c0f7f
--- /dev/null
+++ b/shlr/capstone-patches/honor-unsigned.patch
@@ -0,0 +1,77 @@
+commit e0f1649e528269c2c99412cf7c64922ec8fd3f5e
+Author: pancake <pancake@nopcode.org>
+Date:   Thu Jun 15 09:36:09 2017 +0200
+
+    Honor CS_OPT_UNSIGNED on x86 and add cstool -u
+
+diff --git a/arch/X86/X86IntelInstPrinter.c b/arch/X86/X86IntelInstPrinter.c
+index 5ea5835d..25ba93ed 100644
+--- a/arch/X86/X86IntelInstPrinter.c
++++ b/arch/X86/X86IntelInstPrinter.c
+@@ -444,7 +444,7 @@ static void _printOperand(MCInst *MI, unsigned OpNo, SStream *O)
+ 		printRegName(O, MCOperand_getReg(Op));
+ 	} else if (MCOperand_isImm(Op)) {
+ 		int64_t imm = MCOperand_getImm(Op);
+-		printImm(MI->csh->syntax, O, imm, false);
++		printImm(MI->csh->syntax, O, imm, MI->csh->imm_unsigned);
+ 	}
+ }
+ 
+@@ -887,7 +887,7 @@ static void printOperand(MCInst *MI, unsigned OpNo, SStream *O)
+ 		// printf(">>> id = %u\n", MI->flat_insn->id);
+ 		switch(MI->flat_insn->id) {
+ 			default:
+-				printImm(MI->csh->syntax, O, imm, false);
++				printImm(MI->csh->syntax, O, imm, MI->csh->imm_unsigned);
+ 				break;
+ 
+ 			case X86_INS_MOVABS:
+diff --git a/cstool/cstool.c b/cstool/cstool.c
+index ef88ccb9..ca430c32 100644
+--- a/cstool/cstool.c
++++ b/cstool/cstool.c
+@@ -72,7 +72,7 @@ static uint8_t *preprocess(char *code, size_t *size)
+ static void usage(char *prog)
+ {
+ 	printf("Cstool for Capstone Disassembler Engine v%u.%u.%u\n\n", CS_VERSION_MAJOR, CS_VERSION_MINOR, CS_VERSION_EXTRA);
+-	printf("Syntax: %s [-d] <arch+mode> <assembly-hexstring> [start-address-in-hex-format]\n", prog);
++	printf("Syntax: %s [-u|-d] <arch+mode> <assembly-hexstring> [start-address-in-hex-format]\n", prog);
+ 	printf("\nThe following <arch+mode> options are supported:\n");
+ 
+ 	if (cs_support(CS_ARCH_X86)) {
+@@ -144,18 +144,23 @@ int main(int argc, char **argv)
+ 	cs_mode md;
+ 	cs_arch arch;
+ 	bool detail_flag = false;
++	bool unsigned_flag = false;
+ 
+ 	if (argc != 3 && argc != 4 && argc != 5) {
+ 		usage(argv[0]);
+ 		return -1;
+ 	}
+ 
+-	if (!strcmp(argv[1], "-d")) {
++	if (!strcmp(argv[1], "-d") || !strcmp(argv[1], "-u")) {
+ 		if (argc == 3) {
+ 			usage(argv[0]);
+ 			return -1;
+ 		}
+-		detail_flag = true;
++		if (argv[1][1] == 'd') {
++			detail_flag = true;
++		} else {
++			unsigned_flag = true;
++		}
+ 		mode = argv[2];
+ 		assembly = preprocess(argv[3], &size);
+ 		if (argc == 5) {
+@@ -345,6 +350,9 @@ int main(int argc, char **argv)
+ 	if (detail_flag) {
+ 		cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);
+ 	}
++	if (unsigned_flag) {
++		cs_option(handle, CS_OPT_UNSIGNED, CS_OPT_ON);
++	}
+ 
+ 	count = cs_disasm(handle, assembly, size, address, 0, &insn);
+ 	if (count > 0) {
diff --git a/shlr/capstone-patches/ut64.patch b/shlr/capstone-patches/ut64.patch
deleted file mode 100644
index a62406a0a8..0000000000
--- a/shlr/capstone-patches/ut64.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --git a/arch/X86/X86IntelInstPrinter.c b/arch/X86/X86IntelInstPrinter.c
-index 57778a7..ad62378 100644
---- a/arch/X86/X86IntelInstPrinter.c
-+++ b/arch/X86/X86IntelInstPrinter.c
-@@ -421,11 +421,8 @@ static void printImm(int syntax, SStream *O, int64_t imm, bool positive)
- 			if (imm < 0) {
- 				if (imm == 0x8000000000000000LL)  // imm == -imm
- 					SStream_concat0(O, "0x8000000000000000");
--				else if (imm < -HEX_THRESHOLD)
--					SStream_concat(O, "-0x%"PRIx64, -imm);
--				else
--					SStream_concat(O, "-%"PRIu64, -imm);
--
-+                                else
-+					SStream_concat(O, "0x%"PRIx64, imm);
- 			} else {
- 				if (imm > HEX_THRESHOLD)
- 					SStream_concat(O, "0x%"PRIx64, imm);