diff --git a/lib_com/options.h b/lib_com/options.h
index 45ca705378ba7ac1916c7255687aad51aa0a5a6c..42f17f9081d30208ab776204fc4410ba465a39b3 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -168,6 +168,7 @@
 #define FIX_1376_MISSING_ISM_METADATA                   /* FhG: IVAS_rend: throw error if there exists an ISM input without a corresponding metadata file path */
 #define FIX_1330_JBM_MEMORY                             /* VA: issue 1330: memory savings in the JBM decoder */
 #define FIX_1370_EXTERNAL_ORIENTATION_CHECK             /* Nokia: add sanity check for Euler angles for external orientations */
+#define FIX_1371_EARLY_PART_INIT_FASTCONV               /* Nokia: fix uninitialized variable in FASTCONV path of binaural reverb init */
 
 /* #################### End BE switches ################################## */
 
diff --git a/lib_dec/ivas_binRenderer_internal.c b/lib_dec/ivas_binRenderer_internal.c
index 4b2c4c7d0730f215a9a9e4e5be207181a2f10b0b..7cd919233e031442c775f5da63ffe3c24a970e0e 100644
--- a/lib_dec/ivas_binRenderer_internal.c
+++ b/lib_dec/ivas_binRenderer_internal.c
@@ -1007,7 +1007,13 @@ ivas_error ivas_binRenderer_open(
                                                   st_ivas->hDecoderConfig->output_Fs,
                                                   st_ivas->hHrtfFastConv->fastconvReverberationTimes,
                                                   st_ivas->hHrtfFastConv->fastconvReverberationEneCorrections,
-                                                  hBinRenderer->earlyPartEneCorrection ) ) != IVAS_ERR_OK )
+#ifdef FIX_1371_EARLY_PART_INIT_FASTCONV
+                                                  NULL
+#else
+                                                  hBinRenderer->earlyPartEneCorrection
+#endif
+                                                  ) ) != IVAS_ERR_OK )
+
         {
             return error;
         }
diff --git a/lib_rend/ivas_reverb.c b/lib_rend/ivas_reverb.c
index 2811a3c4d03ec644555e7daa56eca3dd233f1638..3119f5fdf9a355a531929c9aaff3d8187c0dc8e8 100644
--- a/lib_rend/ivas_reverb.c
+++ b/lib_rend/ivas_reverb.c
@@ -1924,13 +1924,23 @@ ivas_error ivas_binaural_reverb_init(
             energyModifier = ( adjustedRevTime - revTimes[bin] ) / adjustedRevTime;
 
             /* Adjust early and late energies, by moving late energy to early energy */
+#ifdef FIX_1371_EARLY_PART_INIT_FASTCONV
+            if ( earlyEne != NULL )
+            {
+                adjustedEarlyEne = earlyEne[bin] + revEne[bin] * energyModifier;
+                earlyEne[bin] = adjustedEarlyEne; /* Store already here */
+            }
+#else
             adjustedEarlyEne = earlyEne[bin] + revEne[bin] * energyModifier;
+#endif
             adjustedLateEne = revEne[bin] * ( 1.0f - energyModifier );
 
             /* Store adjusted room effect parameters to be used in reverb processing */
             revTimes[bin] = adjustedRevTime;
             revEne[bin] = adjustedLateEne;
+#ifndef FIX_1371_EARLY_PART_INIT_FASTCONV
             earlyEne[bin] = adjustedEarlyEne;
+#endif
         }
     }