diff --git a/pkgs/os-specific/darwin/apple-source-releases/ICU/clang-5.patch b/pkgs/os-specific/darwin/apple-source-releases/ICU/clang-5.patch
new file mode 100644
index 00000000000..fd9df812940
--- /dev/null
+++ b/pkgs/os-specific/darwin/apple-source-releases/ICU/clang-5.patch
@@ -0,0 +1,22 @@
+diff --git a/icuSources/i18n/ucoleitr.cpp b/icuSources/i18n/ucoleitr.cpp
+index ecc94c9..936452f 100644
+--- a/icuSources/i18n/ucoleitr.cpp
++++ b/icuSources/i18n/ucoleitr.cpp
+@@ -320,7 +320,7 @@ ucol_nextProcessed(UCollationElements *elems,
+                    int32_t            *ixHigh,
+                    UErrorCode         *status)
+ {
+-    return (UCollationPCE::UCollationPCE(elems)).nextProcessed(ixLow, ixHigh, status);
++    return (UCollationPCE(elems)).nextProcessed(ixLow, ixHigh, status);
+ }
+ 
+ 
+@@ -384,7 +384,7 @@ ucol_previousProcessed(UCollationElements *elems,
+                    int32_t            *ixHigh,
+                    UErrorCode         *status)
+ {
+-    return (UCollationPCE::UCollationPCE(elems)).previousProcessed(ixLow, ixHigh, status);
++    return (UCollationPCE(elems)).previousProcessed(ixLow, ixHigh, status);
+ }
+ 
+ U_NAMESPACE_BEGIN
diff --git a/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix b/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
index 2d098418f03..eef26f4b79a 100644
--- a/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
+++ b/pkgs/os-specific/darwin/apple-source-releases/ICU/default.nix
@@ -3,6 +3,8 @@
 appleDerivation {
   nativeBuildInputs = [ cctools ];
 
+  patches = [ ./clang-5.patch ];
+
   postPatch = ''
     substituteInPlace makefile \
       --replace /usr/bin/ "" \