diff --git a/CHANGELOG.md b/CHANGELOG.md
index 919e18e13895..3c5d57d4e034 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## __AWS SDK for Java v2__
+  - ### Bugfixes
+    - The period, solidus, at-sign, and percent sign are now allowed in profile names and property names.
+
 # __2.10.29__ __2019-12-03__
 ## __AWS Lambda__
   - ### Features
diff --git a/core/profiles/src/main/java/software/amazon/awssdk/profiles/internal/ProfileFileReader.java b/core/profiles/src/main/java/software/amazon/awssdk/profiles/internal/ProfileFileReader.java
index 99eda03eb688..48223386a9d3 100644
--- a/core/profiles/src/main/java/software/amazon/awssdk/profiles/internal/ProfileFileReader.java
+++ b/core/profiles/src/main/java/software/amazon/awssdk/profiles/internal/ProfileFileReader.java
@@ -42,7 +42,7 @@ public final class ProfileFileReader {
 
     private static final Pattern EMPTY_LINE = Pattern.compile("^[\t ]*$");
 
-    private static final Pattern VALID_IDENTIFIER = Pattern.compile("^[A-Za-z0-9_\\-]*$");
+    private static final Pattern VALID_IDENTIFIER = Pattern.compile("^[A-Za-z0-9_\\-/.%@]*$");
 
     private ProfileFileReader() {}
 
@@ -213,7 +213,7 @@ private static Optional<String> parseProfileDefinition(ParserState state, String
         // If the profile name includes invalid characters, it should be ignored.
         if (!isValidIdentifier(profileName)) {
             log.warn(() -> "Ignoring profile '" + standardizedProfileName + "' on line " + state.currentLineNumber + " because " +
-                           "it was not alphanumeric with dashes or underscores.");
+                           "it was not alphanumeric with only these special characters: - / . % @ _");
             return Optional.empty();
         }
 
@@ -256,7 +256,7 @@ private static Optional<Pair<String, String>> parsePropertyDefinition(ParserStat
         // If the profile name includes invalid characters, it should be ignored.
         if (!isValidIdentifier(propertyKey)) {
             log.warn(() -> "Ignoring property '" + propertyKey + "' on line " + state.currentLineNumber + " because " +
-                           "its name was not alphanumeric with dashes or underscores.");
+                           "its name was not alphanumeric with only these special characters: - / . % @ _");
             return Optional.empty();
         }
 
diff --git a/core/profiles/src/test/java/software/amazon/awssdk/profiles/ProfileFileTest.java b/core/profiles/src/test/java/software/amazon/awssdk/profiles/ProfileFileTest.java
index d949eddc0ac6..ec9a2cf0aa61 100644
--- a/core/profiles/src/test/java/software/amazon/awssdk/profiles/ProfileFileTest.java
+++ b/core/profiles/src/test/java/software/amazon/awssdk/profiles/ProfileFileTest.java
@@ -326,14 +326,14 @@ public void invalidPropertyNamesAreIgnored() {
 
     @Test
     public void allValidProfileNameCharactersAreSupported() {
-        assertThat(configFileProfiles("[profile ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_]"))
-            .isEqualTo(profiles(profile("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_")));
+        assertThat(configFileProfiles("[profile ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_./%@]"))
+            .isEqualTo(profiles(profile("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_./%@")));
     }
 
     @Test
     public void allValidPropertyNameCharactersAreSupported() {
-        assertThat(configFileProfiles("[profile foo]\nABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_ = value"))
-            .isEqualTo(profiles(profile("foo", property("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_",
+        assertThat(configFileProfiles("[profile foo]\nABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_./%@ = value"))
+            .isEqualTo(profiles(profile("foo", property("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_./%@",
                                                         "value"))));
     }