diff --git a/ChangeLog b/ChangeLog
index 58dd453..53d8afe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -92,6 +92,9 @@ only when PCRE2_NO_START_OPTIMIZE was *not* set:
         (?=.*[A-Z])(?=.{8,16})(?!.*[\s]) matches after the start in lines that
         start with spaces. Starting .* in an assertion is no longer taken as an 
         indication of matching at the start (or after a newline).  
+        
+16. The "offset" modifier in pcre2test was not being ignored (as documented)
+when the POSIX API was in use.
 
 
 Version 10.22 29-July-2016
diff --git a/src/pcre2test.c b/src/pcre2test.c
index 039a4f0..30fd190 100644
--- a/src/pcre2test.c
+++ b/src/pcre2test.c
@@ -6065,6 +6065,7 @@ if ((pat_patctl.control & CTL_POSIX) != 0)
   if (dat_datctl.get_numbers[0] >= 0 || dat_datctl.get_names[0] != 0)
     prmsg(&msg, "get");
   if (dat_datctl.jitstack != 0) prmsg(&msg, "jitstack");
+  if (dat_datctl.offset != 0) prmsg(&msg, "offset");
 
   if ((dat_datctl.options & ~POSIX_SUPPORTED_MATCH_OPTIONS) != 0)
     {
@@ -6087,9 +6088,8 @@ if ((pat_patctl.control & CTL_POSIX) != 0)
   if ((dat_datctl.options & PCRE2_NOTBOL) != 0) eflags |= REG_NOTBOL;
   if ((dat_datctl.options & PCRE2_NOTEOL) != 0) eflags |= REG_NOTEOL;
   if ((dat_datctl.options & PCRE2_NOTEMPTY) != 0) eflags |= REG_NOTEMPTY;
-
-  rc = regexec(&preg, (const char *)pp + dat_datctl.offset,
-    dat_datctl.oveccount, pmatch, eflags);
+  
+  rc = regexec(&preg, (const char *)pp, dat_datctl.oveccount, pmatch, eflags);
   if (rc != 0)
     {
     (void)regerror(rc, &preg, (char *)pbuffer8, pbuffer8_size);
diff --git a/testdata/testinput18 b/testdata/testinput18
index e31b96e..ea47a4d 100644
--- a/testdata/testinput18
+++ b/testdata/testinput18
@@ -103,4 +103,7 @@
 
 /\[A]{1000000}**/expand,regerror_buffsize=32
 
+//posix_nosub
+    \=offset=70000
+
 # End of testdata/testinput18
diff --git a/testdata/testoutput18 b/testdata/testoutput18
index 3df298c..e2eb009 100644
--- a/testdata/testoutput18
+++ b/testdata/testoutput18
@@ -157,4 +157,9 @@ Failed: POSIX code 4: ? * + invalid at offset 100000
 /\[A]{1000000}**/expand,regerror_buffsize=32
 Failed: POSIX code 4: ? * + invalid at offset 1000001
 
+//posix_nosub
+    \=offset=70000
+** Ignored with POSIX interface: offset
+Matched with REG_NOSUB
+
 # End of testdata/testinput18