diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c956efd..be5a6ae0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,9 +35,27 @@ set(OPENJPEG_VERSION
   "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}")
 set(PACKAGE_VERSION
   "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}")
+
+# Because autotools does not support X.Y notation for SOVERSION, we have to use
+# two numbering, one for the openjpeg version and one for openjpeg soversion
+# version | soversion
+#   1.0   |  0
+#   1.1   |  1
+#   1.2   |  2
+#   1.3   |  3
+#   1.4   |  4
+#   1.5   |  5
+#   1.5.1 |  5
+#   2.0   |  6
+# above is the recommendation by the OPJ team. If you really need to override this default,
+# you can specify your own OPENJPEG_SOVERSION at cmake configuration time:
+# cmake -DOPENJPEG_SOVERSION:STRING=42 /path/to/openjpeg
+if(NOT OPENJPEG_SOVERSION)
+  SET(OPENJPEG_SOVERSION 6)
+endif(NOT OPENJPEG_SOVERSION)
 set(OPENJPEG_LIBRARY_PROPERTIES
   VERSION   "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}"
-  SOVERSION "${OPENJPEG_VERSION_MAJOR}"
+  SOVERSION "${OPENJPEG_SOVERSION}"
 )
 
 # --------------------------------------------------------------------------