diff --git a/tests/regress/Makefile b/tests/regress/Makefile
index 8e57d10f..d056e4d6 100644
--- a/tests/regress/Makefile
+++ b/tests/regress/Makefile
@@ -14,6 +14,7 @@ TESTS += mem_exec
 TESTS += mips_kseg0_1
 TESTS += eflags_nosync
 TESTS += 00opcode_uc_crash
+TESTS += eflags_noset
 
 all: $(TESTS)
 
diff --git a/tests/regress/eflags_noset.c b/tests/regress/eflags_noset.c
new file mode 100644
index 00000000..4255bec5
--- /dev/null
+++ b/tests/regress/eflags_noset.c
@@ -0,0 +1,106 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include <unicorn/unicorn.h>
+
+#define X86_CODE32 "\x9C\x68\xFF\xFE\xFF\xFF\x9D\x9C\x58\x9D" // pushf; push ffffffeff; popf; pushf; pop eax; popf
+#define ADDRESS 0x1000000
+#define PAGE_8K (1 << 13)
+#define PAGE_4K (1 << 12)
+#define TARGET_PAGE_MASK ~(PAGE_4K - 1)
+#define TARGET_PAGE_PREPARE(addr) (((addr) + PAGE_4K - 1) & TARGET_PAGE_MASK)
+#define TARGET_PAGE_ALIGN(addr) (addr - (TARGET_PAGE_PREPARE(addr) - addr) & TARGET_PAGE_MASK)
+
+unsigned int realEflags()
+{
+    unsigned int val = 0;
+    unsigned int i = 0xFFFFFEFF; //attempt to set ALL bits except trap flag.
+
+    __asm__("pushf\n\t"
+    "push %0\n\t"
+    "popf\n\t" 
+    "pushf\n\t"
+    "pop %0\n\t"
+    "popf"
+    : "=r"(val)
+    : "r"(i)
+    : "%0"); 
+
+    printf("Real system eflags: 0x%08X\n", val);
+
+    return val;
+}
+
+static void VM_exec()
+{
+    uc_engine *uc;
+    uc_err err;
+    unsigned int r_eax, eflags, r_esp, realflags = 0;
+
+    r_eax = 0;
+    r_esp = ADDRESS+0x100; //some safe distance from main code.
+    eflags = 0x00000206;
+
+    // Initialize emulator in X86-32bit mode
+    err = uc_open(UC_ARCH_X86, UC_MODE_32, &uc);
+    if(err)
+    {
+        printf("Failed on uc_open() with error returned: %s\n", uc_strerror(err));
+        return;
+    }
+
+    err = uc_mem_map(uc, ADDRESS, (2 * 1024 * 1024), UC_PROT_ALL);
+    if(err != UC_ERR_OK)
+    {
+        printf("Failed to map memory %s\n", uc_strerror(err));
+        return;
+    }
+
+    // write machine code to be emulated to memory
+    err = uc_mem_write(uc, ADDRESS, X86_CODE32, sizeof(X86_CODE32) - 1);
+    if(err != UC_ERR_OK)
+    {
+        printf("Failed to write emulation code to memory, quit!: %s(len %lu)\n", uc_strerror(err), sizeof(X86_CODE32) - 1);
+        return;
+    }
+
+    // initialize machine registers
+    uc_reg_write(uc, UC_X86_REG_EAX, &r_eax);
+    uc_reg_write(uc, UC_X86_REG_ESP, &r_esp); //make stack pointer point to already mapped memory so we don't need to hook.
+    uc_reg_write(uc, UC_X86_REG_EFLAGS, &eflags);
+
+    // emulate machine code in infinite time
+    err = uc_emu_start(uc, ADDRESS, ADDRESS + (sizeof(X86_CODE32) - 1), 0, 0);
+    if(err)
+    {
+        printf("Failed on uc_emu_start() with error returned %u: %s\n", err, uc_strerror(err));
+
+        uc_close(uc);
+        return;
+    }
+
+    uc_reg_read(uc, UC_X86_REG_EAX, &r_eax);
+    uc_reg_read(uc, UC_X86_REG_EFLAGS, &eflags);
+
+    uc_close(uc);
+
+    printf(">>> Emulation done. Below is the CPU context\n");
+    printf(">>> EAX = 0x%08X\n", r_eax);
+    printf(">>> EFLAGS = 0x%08X\n", eflags);
+
+    realflags = realEflags();
+
+    assert(r_eax == realflags);
+
+    puts("Unicorn EFLAGS match expected system eflags");
+}
+
+
+int main(int argc, char *argv[])
+{
+    VM_exec();
+    return 0;
+}