diff --git a/CMakeLists.txt b/CMakeLists.txt
index d5b3b89..790595e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,10 +32,13 @@ if(BACKTRACE_LIBC)
 else()
 	pkg_check_modules( UNWIND libunwind )
 	find_library(EXECINFO_LIBRARIES NAMES execinfo)
-	if(EXECINFO_LIBRARIES)
+	if(EXECINFO_LIBRARIES_FOUND)
 		set(EXECINFO_FOUND TRUE)
 		set(EXECINFO_LIBRARIES "-lexecinfo")
 		set(BACKTRACE_L_FLAGS "-rdynamic")
+	else()
+		set(EXECINFO_LIBRARIES "")
+		set(BACKTRACE_L_FLAGS "")
 	endif()
 endif()
 
@@ -61,7 +64,7 @@ if( NOT IMLIB_BUILD_WITH_X )
 endif( NOT IMLIB_BUILD_WITH_X )
 
 if( NOT BACKTRACE_LIBC_FOUND AND NOT UNWIND_FOUND AND NOT EXECINFO_FOUND )
-  message( WARNING "Backtrace support not available. You can enable it with libexecinfo/libunwind or libc." )
+  message( WARNING "Backtrace support not available. You can enable it by installing libexecinfo or libunwind." )
 endif()
 
 add_definitions( -D_GNU_SOURCE )