diff --git a/absl/strings/ascii.cc b/absl/strings/ascii.cc
index 3f7c581..93bb03e 100644
--- a/absl/strings/ascii.cc
+++ b/absl/strings/ascii.cc
@@ -15,6 +15,7 @@
 #include "absl/strings/ascii.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace ascii_internal {
 
 // # Table generated by this Python code (bit 0x02 is currently unused):
@@ -56,7 +57,7 @@
 // of these bits is tightly coupled to this implementation, the individual bits
 // are not named. Note that bitfields for all characters above ASCII 127 are
 // zero-initialized.
-const unsigned char kPropertyBits[256] = {
+ABSL_DLL const unsigned char kPropertyBits[256] = {
     0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x00
     0x40, 0x68, 0x48, 0x48, 0x48, 0x48, 0x40, 0x40,
     0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  // 0x10
@@ -78,7 +79,7 @@
 // Array of characters for the ascii_tolower() function. For values 'A'
 // through 'Z', return the lower-case character; otherwise, return the
 // identity of the passed character.
-const char kToLower[256] = {
+ABSL_DLL const char kToLower[256] = {
   '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
   '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
   '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
@@ -116,7 +117,7 @@
 // Array of characters for the ascii_toupper() function. For values 'a'
 // through 'z', return the upper-case character; otherwise, return the
 // identity of the passed character.
-const char kToUpper[256] = {
+ABSL_DLL const char kToUpper[256] = {
   '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
   '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
   '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
@@ -195,4 +196,5 @@
   str->erase(output_it - &(*str)[0]);
 }
 
+ABSL_NAMESPACE_END
 }  // namespace absl