diff --git a/lib/IlmCtl/CMakeLists.txt b/lib/IlmCtl/CMakeLists.txt
index 5c0ad9c..4765710 100644
--- a/lib/IlmCtl/CMakeLists.txt
+++ b/lib/IlmCtl/CMakeLists.txt
@@ -42,8 +42,8 @@ target_link_libraries (IlmCtl
 
 set_target_properties(IlmCtl
 	PROPERTIES
-		VERSION ${CTL_VERSION}
-		SOVERSION ${CTL_VERSION}
+		VERSION "${CTL_VERSION}"
+		SOVERSION "${CTL_VERSION_MAJOR}.${CTL_VERSION_MINOR}"
 )
 
 install( FILES
diff --git a/lib/IlmCtlMath/CMakeLists.txt b/lib/IlmCtlMath/CMakeLists.txt
index 08fdf00..cec94ca 100644
--- a/lib/IlmCtlMath/CMakeLists.txt
+++ b/lib/IlmCtlMath/CMakeLists.txt
@@ -29,8 +29,8 @@ target_link_libraries (IlmCtlMath
 
 set_target_properties(IlmCtlMath
 	PROPERTIES
-		VERSION ${CTL_VERSION}
-		SOVERSION ${CTL_VERSION}
+		VERSION "${CTL_VERSION}"
+		SOVERSION "${CTL_VERSION_MAJOR}.${CTL_VERSION_MINOR}"
 )
 
 install(FILES
diff --git a/lib/IlmCtlSimd/CMakeLists.txt b/lib/IlmCtlSimd/CMakeLists.txt
index d9dc6ec..54d35a7 100644
--- a/lib/IlmCtlSimd/CMakeLists.txt
+++ b/lib/IlmCtlSimd/CMakeLists.txt
@@ -88,8 +88,8 @@ target_link_libraries(IlmCtlSimd
 
 set_target_properties(IlmCtlSimd
 	PROPERTIES
-		VERSION ${CTL_VERSION}
-		SOVERSION ${CTL_VERSION}
+		VERSION "${CTL_VERSION}"
+		SOVERSION "${CTL_VERSION_MAJOR}.${CTL_VERSION_MINOR}"
 )
 
 install(FILES CtlSimdInterpreter.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/CTL)
diff --git a/lib/IlmImfCtl/CMakeLists.txt b/lib/IlmImfCtl/CMakeLists.txt
index a0cd535..f61942b 100644
--- a/lib/IlmImfCtl/CMakeLists.txt
+++ b/lib/IlmImfCtl/CMakeLists.txt
@@ -36,9 +36,9 @@ target_link_libraries (IlmImfCtl
     )
 
 set_target_properties(IlmImfCtl
-       PROPERTIES
-               VERSION ${CTL_VERSION}
-               SOVERSION ${CTL_VERSION}
+  PROPERTIES
+    VERSION "${CTL_VERSION}"
+    SOVERSION "${CTL_VERSION_MAJOR}.${CTL_VERSION_MINOR}"
 )
 
 install(FILES
diff --git a/lib/dpx/CMakeLists.txt b/lib/dpx/CMakeLists.txt
index e9aa5bb..38facab 100644
--- a/lib/dpx/CMakeLists.txt
+++ b/lib/dpx/CMakeLists.txt
@@ -37,6 +37,6 @@ target_link_libraries(ctldpx
 
 set_target_properties(ctldpx
 	PROPERTIES
-		VERSION ${CTL_VERSION}
-		SOVERSION ${CTL_VERSION}
+		VERSION "${CTL_VERSION}"
+		SOVERSION "${CTL_VERSION_MAJOR}.${CTL_VERSION_MINOR}"
 )