diff --git a/icu4c/source/configure b/icu4c/source/configure
index 415c1342f3e..6ac6a687ab7 100755
--- a/icu4c/source/configure
+++ b/icu4c/source/configure
@@ -4408,7 +4408,7 @@ i*86-*-solaris*)
     if test "$GCC" = yes; then
                 GENCCODE_ASSEMBLY="-a gcc"
     else
-        GENCCODE_ASSEMBLY="-a sun86"
+        GENCCODE_ASSEMBLY="-a sun-x86"
     fi ;;
 sparc-*-solaris*)
     GENCCODE_ASSEMBLY="-a sun"
diff --git a/icu4c/source/configure.in b/icu4c/source/configure.in
index 24ed397b7da..4715a858d42 100644
--- a/icu4c/source/configure.in
+++ b/icu4c/source/configure.in
@@ -364,7 +364,7 @@ i*86-*-solaris*)
         dnl We're using gcc, and the simple -a gcc command line works for genccode
         GENCCODE_ASSEMBLY="-a gcc"
     else
-        GENCCODE_ASSEMBLY="-a sun86"
+        GENCCODE_ASSEMBLY="-a sun-x86"
     fi ;;
 sparc-*-solaris*)
     GENCCODE_ASSEMBLY="-a sun"
diff --git a/icu4c/source/tools/genccode/genccode.c b/icu4c/source/tools/genccode/genccode.c
index 4c398d986e5..874d698bf39 100644
--- a/icu4c/source/tools/genccode/genccode.c
+++ b/icu4c/source/tools/genccode/genccode.c
@@ -188,7 +188,7 @@ static const struct AssemblyType {
 
         ".word "
     },
-    {"sun86",
+    {"sun-x86",
         "Drodata.rodata:\n"
         "\t.type   Drodata.rodata,@object\n"
         "\t.size   Drodata.rodata,0\n"