diff --git a/sumpy/tools.py b/sumpy/tools.py
index c9cd433f7f7f8e256e9b186d30b5fac520837313..01874b897972c3cc0fdc6c5975cc87280fccf85a 100644
--- a/sumpy/tools.py
+++ b/sumpy/tools.py
@@ -200,15 +200,11 @@ class KernelCacheWrapper(object):
         from sumpy import code_cache, CACHING_ENABLED
 
         if CACHING_ENABLED:
-            from sumpy.version import SUMPY_KERNEL_VERSION
-
             import loopy.version
             cache_key = (
                     self.get_cache_key()
                     + tuple(sorted(kwargs.iteritems()))
-                    + (loopy.version.DATA_MODEL_VERSION,
-                        SUMPY_KERNEL_VERSION,)
-                    )
+                    + (loopy.version.DATA_MODEL_VERSION,))
 
             try:
                 result = code_cache[cache_key]
@@ -218,6 +214,8 @@ class KernelCacheWrapper(object):
                 pass
 
         logger.info("%s: kernel cache miss" % self.name)
+        logger.info("%s: missed cache key: %s" % (
+            self.name, cache_key))
 
         knl = self.get_optimized_kernel(**kwargs)
 
diff --git a/sumpy/version.py b/sumpy/version.py
index e0f86a84f406d0cdd485ff962275357d34f64358..d311f19b4bad064bda0fe5e8a23365145faa80d9 100644
--- a/sumpy/version.py
+++ b/sumpy/version.py
@@ -24,5 +24,3 @@ THE SOFTWARE.
 VERSION = (2014, 1)
 VERSION_STATUS = "beta1"
 VERSION_TEXT = ".".join(str(x) for x in VERSION) + VERSION_STATUS
-
-SUMPY_KERNEL_VERSION = 1