diff --git a/srcpkgs/okular/patches/musl-vasprintf.patch b/srcpkgs/okular/patches/musl-vasprintf.patch
new file mode 100644
index 00000000000..eac89d815ed
--- /dev/null
+++ b/srcpkgs/okular/patches/musl-vasprintf.patch
@@ -0,0 +1,29 @@
+--- core/synctex/synctex_parser.c	2017-12-05 23:07:10.000000000 +0100
++++ core/synctex/synctex_parser.c	2018-01-01 19:03:46.281593488 +0100
+@@ -8188,6 +8188,26 @@
+ }
+ 
+ #endif
++#if !defined(__GLIBC__)
++#include <stdio.h>
++#include <stdlib.h>
++#include <stdarg.h>
++
++static int vasprintf(char **ret,
++              const char *format,
++              va_list ap)
++{
++  int len;
++  len = vsnprintf(NULL, 0, format, ap);
++  if (len < 0) return -1;
++  *ret = malloc(len + 1);
++  if (!*ret) return -1;
++  vsnprintf(*ret, len+1, format, ap);
++  (*ret)[len] = '\0';
++  return len;
++}
++
++#endif
+ 
+ /**
+  *  gzvprintf is not available until OSX 10.10