diff --git a/pcre-8.42-pcreposix.patch b/pcre-8.42-pcreposix.patch
new file mode 100644
index 0000000..dcc88ee
--- /dev/null
+++ b/pcre-8.42-pcreposix.patch
@@ -0,0 +1,36 @@
+From: Mark Baker <mark@mnb.org.uk>
+Date: Wed, 13 Jul 2016 21:20:13 +0100
+Subject: pcreposix
+
+---
+ pcreposix.h | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+diff --git a/pcreposix.h b/pcreposix.h
+index c77c0b0..4527f78 100644
+--- a/pcreposix.h
++++ b/pcreposix.h
+@@ -133,14 +133,19 @@ file. */
+ 
+ /* The functions */
+ 
+-PCREPOSIX_EXP_DECL int regcomp(regex_t *, const char *, int);
+-PCREPOSIX_EXP_DECL int regexec(const regex_t *, const char *, size_t,
++PCREPOSIX_EXP_DECL int pcreposix_regcomp(regex_t *, const char *, int);
++PCREPOSIX_EXP_DECL int pcreposix_regexec(const regex_t *, const char *, size_t,
+                      regmatch_t *, int);
+-PCREPOSIX_EXP_DECL size_t regerror(int, const regex_t *, char *, size_t);
+-PCREPOSIX_EXP_DECL void regfree(regex_t *);
++PCREPOSIX_EXP_DECL size_t pcreposix_regerror(int, const regex_t *, char *, size_t);
++PCREPOSIX_EXP_DECL void pcreposix_regfree(regex_t *);
+ 
+ #ifdef __cplusplus
+ }   /* extern "C" */
+ #endif
+ 
++#define regcomp pcreposix_regcomp
++#define regexec pcreposix_regexec
++#define regerror pcreposix_regerror
++#define regfree pcreposix_regfree
++
+ #endif /* End of pcreposix.h */
diff --git a/pcre.changes b/pcre.changes
index d353ee7..c048b8d 100644
--- a/pcre.changes
+++ b/pcre.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Oct 25 10:24:59 UTC 2018 - lauffer@ph-freiburg.de
+
+- pcreposix patch taken from debian. Solves cyrus-imapd issue #1731, too.
+
 -------------------------------------------------------------------
 Tue Sep  4 11:46:19 UTC 2018 - astieger@suse.com
 
diff --git a/pcre.spec b/pcre.spec
index 60c39de..f089a14 100644
--- a/pcre.spec
+++ b/pcre.spec
@@ -34,6 +34,8 @@ Patch0:         pcre-8.32-visibility.patch
 Patch1:         pcre-8.21-multilib.patch
 #PATCH-FIX-OPENSUSE kstreitova@suse.com fix pcre stack frame size detection https://bugs.exim.org/show_bug.cgi?id=2173
 Patch2:         pcre-8.41-stack_frame_size_detection.patch
+#Patch 3: see: https://sources.debian.net/patches/pcre3/2:8.39-2/pcreposix.patch/ and cyrus imapd issue  #1731
+Patch3:         pcre-8.42-pcreposix.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  gcc-c++
@@ -144,6 +146,7 @@ as Perl 5.
 %patch0 -p1
 %patch1 -p1
 %patch2 -p1
+%patch3 -p1
 
 %build
 # Available JIT archs see sljit/sljitConfig.h