diff --git a/reload4j-java1.patch b/reload4j-java1.patch
new file mode 100644
index 0000000..99eb9d5
--- /dev/null
+++ b/reload4j-java1.patch
@@ -0,0 +1,11 @@
+--- reload4j-1.2.19/src/main/java/org/apache/log4j/MDC.java	2022-02-23 08:05:01.051452323 +0100
++++ reload4j-1.2.19/src/main/java/org/apache/log4j/MDC.java	2022-02-23 08:05:39.546646231 +0100
+@@ -47,7 +47,7 @@
+ 
+     static final int HT_SIZE = 7;
+ 
+-    // boolean java1;
++    boolean java1;
+ 
+     ThreadLocalMap tlm;
+ 
diff --git a/reload4j.changes b/reload4j.changes
index 3ec718c..d8c8104 100644
--- a/reload4j.changes
+++ b/reload4j.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Wed Feb 23 07:08:03 UTC 2022 - Fridrich Strba <fstrba@suse.com>
+
+- Added patch:
+  * reload4j-java1.patch
+    + Some projects using log4j12 expect the org.apache.log4j.MDC
+      class to have internal boolean variable java1. We add it
+      there just to avoid runtime incompatibilities as a log4j12
+      drop-in replacement.
+- Add Provides and Obsoletes to the javadoc package in order to 
+  transition smoothly out of log4j12-javadoc and log4j12-manual
+
 -------------------------------------------------------------------
 Tue Feb 22 08:12:11 UTC 2022 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/reload4j.spec b/reload4j.spec
index 26af389..ef554e2 100644
--- a/reload4j.spec
+++ b/reload4j.spec
@@ -26,6 +26,7 @@ Group:          Development/Libraries/Java
 URL:            https://reload4j.qos.ch/
 Source0:        %{name}-%{version}.tar.xz
 Source1:        %{name}-build.xml
+Patch0:         %{name}-java1.patch
 BuildRequires:  ant
 BuildRequires:  fdupes
 BuildRequires:  geronimo-jms-1_1-api
@@ -62,12 +63,16 @@ make changes to source code.
 %package javadoc
 Summary:        Javadoc for %{name}
 Group:          Documentation/HTML
+Obsoletes:      log4j12-javadoc < %{version}
+Obsoletes:      log4j12-manual < %{version}
+Provides:       log4j12-javadoc = %{version}
 
 %description javadoc
 This package contains the API documentation for %{name}.
 
 %prep
 %setup -q
+%patch0 -p1
 cp %{SOURCE1} build.xml
 mkdir -p lib